diff --git a/api/incubator/src/testConvertToModel/java/io/opentelemetry/api/incubator/InstrumentationConfigUtilTest.java b/api/incubator/src/testConvertToModel/java/io/opentelemetry/api/incubator/InstrumentationConfigUtilTest.java
index 94b6b10f112..2c26063925a 100644
--- a/api/incubator/src/testConvertToModel/java/io/opentelemetry/api/incubator/InstrumentationConfigUtilTest.java
+++ b/api/incubator/src/testConvertToModel/java/io/opentelemetry/api/incubator/InstrumentationConfigUtilTest.java
@@ -19,6 +19,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalInstrumentationModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalLanguageSpecificInstrumentationModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalLanguageSpecificInstrumentationPropertyModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.OpenTelemetryConfigurationModelAccessor;
 import io.opentelemetry.sdk.internal.SdkConfigProvider;
 import java.io.ByteArrayInputStream;
 import java.nio.charset.StandardCharsets;
@@ -132,9 +133,9 @@ private static ConfigProvider withInstrumentationConfig(
     javaConfig.withAdditionalProperty(instrumentationName, instrumentationConfig);
     DeclarativeConfigProperties modelProperties =
         DeclarativeConfiguration.toConfigProperties(
-            new OpenTelemetryConfigurationModel()
-                .withInstrumentationDevelopment(
-                    new ExperimentalInstrumentationModel().withJava(javaConfig)));
+            OpenTelemetryConfigurationModelAccessor.withInstrumentation(
+                new OpenTelemetryConfigurationModel(),
+                new ExperimentalInstrumentationModel().withJava(javaConfig)));
 
     return SdkConfigProvider.create(modelProperties);
   }
diff --git a/buildSrc/src/main/kotlin/io/opentelemetry/gradle/DeclarativeConfigPojoGenerator.kt b/buildSrc/src/main/kotlin/io/opentelemetry/gradle/DeclarativeConfigPojoGenerator.kt
index 264697eb7d1..1a5640ab05e 100644
--- a/buildSrc/src/main/kotlin/io/opentelemetry/gradle/DeclarativeConfigPojoGenerator.kt
+++ b/buildSrc/src/main/kotlin/io/opentelemetry/gradle/DeclarativeConfigPojoGenerator.kt
@@ -21,6 +21,10 @@ import java.io.File
  * - Properties with object-typed additionalProperties get a synthetic "*PropertyModel" companion
  *   class. When additionalProperties is boolean true (root schema) Map<String, Object> is used
  *   directly.
+ * - Properties whose JSON key ends with "/development" are experimental. On stable (non-
+ *   Experimental) classes, these properties are not exposed as public getters or builders.
+ *   Instead, their deserialized values are stored in an opaque experimentalProperties map, and
+ *   a generated "*ModelAccessor" class in model.internal provides typed access.
  * - All $refs are local (#/$defs/...).
  */
 class DeclarativeConfigPojoGenerator(
@@ -34,12 +38,11 @@ class DeclarativeConfigPojoGenerator(
   private lateinit var enumDefNames: Set<String>
   private lateinit var extensibleDefNames: Set<String>
 
-  // Carries resolved type information for a single property.
   private data class ResolvedType(val expr: String, val imports: Set<String> = emptySet())
 
-  // Carries all derived information about one schema property.
   private data class FieldInfo(
     val jsonKey: String,
+    val constName: String, // SCREAMING_SNAKE_CASE version of jsonKey, used as a Java string constant
     val javaField: String,
     val getter: String,
     val builder: String,
@@ -58,7 +61,7 @@ class DeclarativeConfigPojoGenerator(
       .map { it.key }
       .toSet()
 
-    // Generate root schema as OpenTelemetryConfigurationModel.
+    // The root schema (title: OpenTelemetryConfiguration) generates OpenTelemetryConfigurationModel.
     val rootTitle = schema["title"]?.asText() ?: error("Root schema has no title")
     generateClassFile(rootTitle, schema)
 
@@ -72,6 +75,8 @@ class DeclarativeConfigPojoGenerator(
 
   private fun isExperimental(schemaKey: String) = schemaKey.startsWith("Experimental")
 
+  private fun isExperimentalProperty(jsonKey: String) = jsonKey.endsWith("/development")
+
   private fun packageForKey(schemaKey: String) =
     if (isExperimental(schemaKey)) internalPackage else modelPackage
 
@@ -125,8 +130,8 @@ class DeclarativeConfigPojoGenerator(
       )
     }
 
-    // Enums are only handled when declared as top-level \$defs (see enumDefNames/generateEnumFile);
-    // a \$ref to such a def resolves to its generated *Model enum above. An inline enum here would
+    // Enums are only handled when declared as top-level $defs (see enumDefNames/generateEnumFile);
+    // a $ref to such a def resolves to its generated *Model enum above. An inline enum here would
     // otherwise fall through to resolveScalarType and be silently emitted as its base scalar type
     // (e.g. String), losing type safety.
     if (propNode.has("enum")) error(
@@ -188,7 +193,7 @@ class DeclarativeConfigPojoGenerator(
     }
   }
 
-  /** Returns true if the type node represents an array (scalar or array-of-types form). */
+  // Handles both "type": "array" and "type": ["array", "null"].
   private fun isArrayType(typeNode: JsonNode?): Boolean {
     if (typeNode == null) return false
     return typeNode.asText() == "array" || (typeNode.isArray && typeNode.any { it.asText() == "array" })
@@ -209,13 +214,33 @@ class DeclarativeConfigPojoGenerator(
     val isExtensible = defKey in extensibleDefNames
     val hasOpenAdditionalProperties = defNode["additionalProperties"]?.isBoolean == true &&
       defNode["additionalProperties"].asBoolean()
+    val isStable = !isExperimental(defKey)
 
     writeFile(pkg, className, buildClassSource(pkg, className, defKey, defNode, isExtensible, hasOpenAdditionalProperties))
 
-    if (isExtensible) {
+    if (isExtensible && !isStable) {
       val propClassName = "${defKey}PropertyModel"
       writeFile(pkg, propClassName, buildPropertyModelSource(pkg, propClassName))
     }
+
+    if (isStable) {
+      val experimentalPropPairs = defNode["properties"]?.properties()
+        ?.filter { isExperimentalProperty(it.key) }
+        ?.toList() ?: emptyList()
+      if (experimentalPropPairs.isNotEmpty()) {
+        generateExperimentalAccessorFile(defKey, pkg, experimentalPropPairs)
+      }
+    }
+  }
+
+  private fun generateExperimentalAccessorFile(
+    defKey: String,
+    stablePkg: String,
+    experimentalPropPairs: List<Map.Entry<String, JsonNode>>,
+  ) {
+    val accessorClassName = "${classNameForKey(defKey)}Accessor"
+    writeFile(internalPackage, accessorClassName,
+      buildExperimentalAccessorSource(defKey, stablePkg, experimentalPropPairs))
   }
 
   private fun writeFile(pkg: String, className: String, content: String) {
@@ -264,12 +289,18 @@ class DeclarativeConfigPojoGenerator(
     isExtensible: Boolean,
     hasOpenAdditionalProperties: Boolean,
   ) = buildString {
-    val properties = defNode["properties"]?.properties()?.toList() ?: emptyList()
+    val allProperties = defNode["properties"]?.properties()?.toList() ?: emptyList()
+    val isStable = !isExperimental(defKey)
+    val hasAnyAdditional = isExtensible || hasOpenAdditionalProperties
+
+    val stablePropertyPairs = if (isStable) allProperties.filter { !isExperimentalProperty(it.key) } else allProperties
+    val experimentalPropPairs = if (isStable) allProperties.filter { isExperimentalProperty(it.key) } else emptyList<Map.Entry<String, JsonNode>>()
 
-    val fields = properties.map { (jsonKey, propNode) ->
+    val fields = stablePropertyPairs.map { (jsonKey, propNode) ->
       val resolved = resolvePropertyType(propNode, pkg)
       FieldInfo(
         jsonKey = jsonKey,
+        constName = jsonKey.toScreamingSnakeCase(),
         javaField = fieldName(jsonKey),
         getter = getterName(jsonKey),
         builder = builderName(jsonKey),
@@ -279,12 +310,28 @@ class DeclarativeConfigPojoGenerator(
       )
     }
 
-    val companionName = if (isExtensible) "${defKey}PropertyModel" else null
+    // Types from model.internal produce an import; same-package types produce none.
+    data class ExpPropInfo(val jsonKey: String, val typeExpr: String, val typeImport: String?)
+    val expProps = if (isStable) experimentalPropPairs.map { (jsonKey, propNode) ->
+      val resolved = resolvePropertyType(propNode, pkg)
+      ExpPropInfo(jsonKey, resolved.expr, resolved.imports.firstOrNull())
+    } else emptyList()
+
+    // Non-list stable properties are candidates for graduated /development key detection.
+    val stableObjectProps = if (isStable) fields.filter { !it.typeExpr.startsWith("List<") } else emptyList()
+
+    val companionName = if (isExtensible && !isStable) "${defKey}PropertyModel" else null
     val additionalPropsType = when {
-      isExtensible -> "Map<String, $companionName>"
-      hasOpenAdditionalProperties -> "Map<String, Object>"
+      isExtensible && !isStable -> "Map<String, $companionName>"
+      hasOpenAdditionalProperties && !isStable -> "Map<String, Object>"
       else -> null
     }
+    val allowsAdditionalProperties = isStable && (isExtensible || hasOpenAdditionalProperties)
+    // Only generate extension property infrastructure when it serves a purpose: current
+    // experimental properties to store, stable non-list properties as graduation candidates,
+    // or an open schema acting as a ComponentProvider extension point.
+    val needsExtensionProperties = isStable &&
+      (expProps.isNotEmpty() || stableObjectProps.isNotEmpty() || allowsAdditionalProperties)
 
     val imports = sortedSetOf(
       "com.fasterxml.jackson.annotation.JsonInclude",
@@ -303,19 +350,49 @@ class DeclarativeConfigPojoGenerator(
     }
     if (fields.isNotEmpty()) imports.add("com.fasterxml.jackson.annotation.JsonProperty")
     for (f in fields) imports.addAll(f.typeImports)
+    if (isStable) {
+      for (f in fields) {
+        imports.add("static $pkg.$className.${f.constName}")
+      }
+    }
+    if (needsExtensionProperties) {
+      imports.addAll(listOf(
+        "java.util.HashMap",
+        "java.util.LinkedHashMap",
+        "java.util.Map",
+        "com.fasterxml.jackson.annotation.JsonAnyGetter",
+        "com.fasterxml.jackson.annotation.JsonAnySetter",
+        "$internalPackage.ExtensionPropertyUtil",
+      ))
+      if (expProps.isNotEmpty()) {
+        val accessorFqcn = "$internalPackage.${classNameForKey(defKey)}Accessor"
+        imports.add(accessorFqcn)
+        imports.add("static $accessorFqcn.EXPERIMENTAL_PROPERTIES")
+      }
+      if (expProps.isEmpty() || stableObjectProps.isEmpty()) {
+        imports.add("java.util.Collections")
+      }
+    }
 
     appendLicense()
     append("\npackage $pkg;\n\n")
     for (imp in imports) append("import $imp;\n")
     append("\n@JsonInclude(JsonInclude.Include.NON_NULL)\n")
 
-    val propKeys = properties.map { "\"${it.key}\"" }
-    if (propKeys.isEmpty()) {
+    // @JsonPropertyOrder covers stable properties only — experimental entries are served via
+    // @JsonAnyGetter and always append last regardless. Static self-imports make the class's
+    // own package-private constants visible at the class-level annotation site.
+    val propKeyRefs = if (isStable) {
+      stablePropertyPairs.map { (jsonKey, _) -> jsonKey.toScreamingSnakeCase() }
+    } else {
+      allProperties.map { "\"${it.key}\"" }
+    }
+    if (propKeyRefs.isEmpty()) {
       append("@JsonPropertyOrder({})\n")
     } else {
       append("@JsonPropertyOrder({\n")
-      propKeys.forEachIndexed { i, k ->
-        append("  $k${if (i < propKeys.size - 1) "," else ""}\n")
+      propKeyRefs.forEachIndexed { i, k ->
+        append("  $k${if (i < propKeyRefs.size - 1) "," else ""}\n")
       }
       append("})\n")
     }
@@ -323,31 +400,67 @@ class DeclarativeConfigPojoGenerator(
     append("@Generated(\"io.opentelemetry.gradle.DeclarativeConfigPojoGenerator\")\n")
     append("public class $className {\n\n")
 
-    // Fields
+    if (isStable) {
+      for (f in fields) {
+        append("  static final String ${f.constName} = \"${f.jsonKey}\";\n")
+      }
+      if (fields.isNotEmpty()) append("\n")
+    }
+    if (needsExtensionProperties) {
+      // STABLE_PROPERTIES maps non-list stable property names to their types for graduated
+      // /development key detection. Omitted when empty.
+      if (stableObjectProps.isNotEmpty()) {
+        append("  private static final Map<String, Class<?>> STABLE_PROPERTIES;\n")
+        append("  static {\n    STABLE_PROPERTIES = new HashMap<>();\n")
+        for (f in stableObjectProps) {
+          append("    STABLE_PROPERTIES.put(${f.constName}, ${f.typeExpr}.class);\n")
+        }
+        append("  }\n")
+      }
+      append("  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = $allowsAdditionalProperties;\n")
+      append("\n")
+    }
     for (f in fields) append("  @Nullable private ${f.typeExpr} ${f.javaField};\n")
+    // Non-stable extensible types keep their own typed additionalProperties map (unchanged).
     if (additionalPropsType != null) {
-      val init = if (isExtensible) "new LinkedHashMap<String, $companionName>()"
+      val init = if (companionName != null) "new LinkedHashMap<String, $companionName>()"
       else "new LinkedHashMap<String, Object>()"
       append("  private $additionalPropsType additionalProperties = $init;\n")
     }
-    if (fields.isNotEmpty() || additionalPropsType != null) append("\n")
+    if (needsExtensionProperties) {
+      append("  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();\n")
+    }
+    if (fields.isNotEmpty() || additionalPropsType != null || needsExtensionProperties) append("\n")
 
-    // Getters and builders (all fields are nullable)
     for (f in fields) {
       if (f.description != null) {
         append("  /**\n")
         for (line in formatJavadoc(f.description)) append("   * $line\n")
         append("   */\n")
       }
-      append("  @JsonProperty(\"${f.jsonKey}\")\n")
+      val jsonPropRef = if (isStable) f.constName else "\"${f.jsonKey}\""
+      append("  @JsonProperty($jsonPropRef)\n")
       append("  @Nullable\n")
-      append("  public ${f.typeExpr} ${f.getter}() {\n    return ${f.javaField};\n  }\n\n")
-      append("  @JsonProperty(\"${f.jsonKey}\")\n")
+      // Non-list stable getters on classes with extension properties fall back to reading a
+      // graduated /development value from extensionProperties. The stable field name is passed
+      // through; ExtensionPropertyUtil.getGraduated internally appends the /development suffix
+      // to match handleAnySetter's storage key.
+      if (needsExtensionProperties && !f.typeExpr.startsWith("List<")) {
+        append("  public ${f.typeExpr} ${f.getter}() {\n")
+        append("    if (${f.javaField} == null) {\n")
+        append("      return ExtensionPropertyUtil.getGraduated(${f.constName}, extensionProperties, ${f.typeExpr}.class);\n")
+        append("    }\n")
+        append("    return ${f.javaField};\n")
+        append("  }\n\n")
+      } else {
+        append("  public ${f.typeExpr} ${f.getter}() {\n    return ${f.javaField};\n  }\n\n")
+      }
+      append("  @JsonProperty($jsonPropRef)\n")
       append("  public $className ${f.builder}(${f.typeExpr} ${f.javaField}) {\n")
       append("    this.${f.javaField} = ${f.javaField};\n    return this;\n  }\n\n")
     }
 
-    // additionalProperties getter/builder
+    // Non-stable extensible types: unchanged additionalProperties getter/setter.
     if (additionalPropsType != null) {
       val apValueType = companionName ?: "Object"
       append("  @JsonAnyGetter\n")
@@ -357,8 +470,28 @@ class DeclarativeConfigPojoGenerator(
       append("    this.additionalProperties.put(name, value);\n    return this;\n  }\n\n")
     }
 
+    if (needsExtensionProperties) {
+      append("  @JsonAnyGetter\n")
+      append("  public Map<String, Object> getExtensionProperties() {\n")
+      if (stableObjectProps.isNotEmpty()) {
+        append("    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);\n")
+      } else {
+        append("    return extensionProperties;\n")
+      }
+      append("  }\n\n")
+      append("  @JsonAnySetter\n")
+      append("  public $className withExtensionProperty(String name, @Nullable Object value) {\n")
+      append("    ExtensionPropertyUtil.handleAnySetter(\n")
+      val experimentalPropsArg = if (expProps.isNotEmpty()) "EXPERIMENTAL_PROPERTIES" else "Collections.emptyMap()"
+      val stablePropsArg = if (stableObjectProps.isNotEmpty()) "STABLE_PROPERTIES" else "Collections.emptyMap()"
+      append("        name, value, extensionProperties, $experimentalPropsArg, $stablePropsArg,\n")
+      append("        ALLOWS_ADDITIONAL_PROPERTIES);\n")
+      append("    return this;\n  }\n\n")
+    }
+
     val allFields = fields.map { it.javaField } +
-      (if (additionalPropsType != null) listOf("additionalProperties") else emptyList())
+      (if (additionalPropsType != null) listOf("additionalProperties") else emptyList()) +
+      (if (needsExtensionProperties) listOf("extensionProperties") else emptyList())
 
     appendToString(className, allFields)
     append("\n")
@@ -368,6 +501,93 @@ class DeclarativeConfigPojoGenerator(
     append("}\n")
   }
 
+  private fun buildExperimentalAccessorSource(
+    defKey: String,
+    stablePkg: String,
+    experimentalPropPairs: List<Map.Entry<String, JsonNode>>,
+  ) = buildString {
+    val stableClassName = classNameForKey(defKey)
+    val accessorClassName = "${stableClassName}Accessor"
+    val stableImport = "$stablePkg.$stableClassName"
+
+    data class PropInfo(
+      val jsonKey: String,
+      val constName: String, // SCREAMING_SNAKE_CASE key constant, /development suffix stripped
+      val getter: String,
+      val builder: String,
+      val typeExpr: String,
+    )
+    val props = experimentalPropPairs.map { (jsonKey, propNode) ->
+      val baseKey = jsonKey.removeSuffix("/development")
+      val typeExpr = resolvePropertyType(propNode, internalPackage).expr
+      // The accessor emits ${typeExpr}.class in EXPERIMENTAL_PROPERTIES. Parameterized types like
+      // List<X> would produce non-compiling Java. Fail fast so a schema change adding a
+      // list-typed /development property is caught at generation time rather than emitting
+      // broken source.
+      if (typeExpr.startsWith("List<")) {
+        error(
+          "Experimental property '$jsonKey' on '$defKey' has list type '$typeExpr'; the " +
+            "generator does not support list-typed experimental properties (see " +
+            "EXPERIMENTAL_PROPERTIES emission in buildExperimentalAccessorSource)."
+        )
+      }
+      PropInfo(
+        jsonKey = jsonKey,
+        constName = baseKey.toScreamingSnakeCase(),
+        getter = getterName(baseKey),
+        builder = builderName(baseKey),
+        typeExpr = typeExpr,
+      )
+    }
+
+    appendLicense()
+    append("\npackage $internalPackage;\n\n")
+    append("import $stableImport;\n")
+    append("import java.util.HashMap;\n")
+    append("import java.util.Map;\n")
+    append("import static java.util.Objects.requireNonNull;\n")
+    append("import javax.annotation.Nullable;\n")
+    append("\n")
+    append("/**\n")
+    append(" * Provides typed access to experimental properties on {@link $stableClassName}.\n")
+    append(" *\n")
+    append(" * <p>This class is internal and experimental. Its APIs are unstable and can change at any\n")
+    append(" * time. Its APIs (or a version of them) may be promoted to the public stable API in the\n")
+    append(" * future, but no guarantees are made.\n")
+    append(" */\n")
+    append("public final class $accessorClassName {\n\n")
+    append("  private $accessorClassName() {}\n\n")
+
+    for (p in props) {
+      append("  static final String ${p.constName} = \"${p.jsonKey}\";\n")
+    }
+    append("\n")
+
+    append("  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;\n")
+    append("  static {\n    EXPERIMENTAL_PROPERTIES = new HashMap<>();\n")
+    for (p in props) {
+      append("    EXPERIMENTAL_PROPERTIES.put(${p.constName}, ${p.typeExpr}.class);\n")
+    }
+    append("  }\n\n")
+
+    for (p in props) {
+      append("  @Nullable\n")
+      append("  public static ${p.typeExpr} ${p.getter}($stableClassName model) {\n")
+      append("    return ExtensionPropertyUtil.get(\n")
+      append("        ${p.constName}, model.getExtensionProperties(), ${p.typeExpr}.class);\n")
+      append("  }\n\n")
+
+      append("  public static $stableClassName ${p.builder}(\n")
+      append("      $stableClassName model, ${p.typeExpr} value) {\n")
+      append("    requireNonNull(value, \"value\");\n")
+      append("    model.withExtensionProperty(${p.constName}, value);\n")
+      append("    return model;\n")
+      append("  }\n\n")
+    }
+
+    append("}\n")
+  }
+
   private fun buildPropertyModelSource(pkg: String, className: String) = buildString {
     appendLicense()
     append("\npackage $pkg;\n\n")
@@ -451,7 +671,9 @@ class DeclarativeConfigPojoGenerator(
 
   /**
    * Formats a schema description string into javadoc lines. Each newline in the schema becomes a
-   * paragraph break so google-java-format doesn't collapse them into one line.
+   * paragraph break so google-java-format doesn't collapse them into one line. Empty lines from
+   * double-newline paragraph separators in the schema are skipped — the following non-empty line
+   * opens its own paragraph.
    */
   private fun formatJavadoc(description: String): List<String> {
     val lines = description.trimEnd('\n').split('\n')
@@ -460,8 +682,6 @@ class DeclarativeConfigPojoGenerator(
       lines.forEachIndexed { i, line ->
         when {
           i == 0 -> add(line)
-          // Empty lines arise from \n\n paragraph breaks in the schema. Skip them: the next
-          // non-empty line will open its own <p>, so the empty string itself gets no tag.
           line.isEmpty() -> Unit
           else -> { add(""); add("<p>$line") }
         }
diff --git a/sdk-extensions/declarative-config/build.gradle.kts b/sdk-extensions/declarative-config/build.gradle.kts
index b55cb460122..941a4155c44 100644
--- a/sdk-extensions/declarative-config/build.gradle.kts
+++ b/sdk-extensions/declarative-config/build.gradle.kts
@@ -107,8 +107,12 @@ val syncPojoModelsToSrc = tasks.register("syncPojoModelsToSrc") {
   val modelSrcDir = File(projectDir, "src/main/java")
   doLast {
     val modelDir = File(modelSrcDir, modelPackage.replace('.', '/'))
-    // Delete first so schema type removals don't leave stale classes.
-    modelDir.deleteRecursively()
+    // Delete only @Generated files so hand-written files (ModelMapper, ExtensionPropertyUtil)
+    // in model.internal survive the regeneration cycle.
+    modelDir.walkTopDown()
+      .filter { it.isFile && it.extension == "java" }
+      .filter { it.readText().contains("@Generated(") }
+      .forEach { it.delete() }
     DeclarativeConfigPojoGenerator(schemaFile, modelSrcDir, modelPackage).generate()
   }
 }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/DeclarativeConfiguration.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/DeclarativeConfiguration.java
index 63503d8ba3d..245936f5efe 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/DeclarativeConfiguration.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/DeclarativeConfiguration.java
@@ -5,8 +5,6 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig;
 
-import com.fasterxml.jackson.annotation.JsonSetter;
-import com.fasterxml.jackson.annotation.Nulls;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import io.opentelemetry.api.incubator.config.DeclarativeConfigException;
@@ -15,6 +13,7 @@
 import io.opentelemetry.sdk.OpenTelemetrySdk;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ModelMapper;
 import io.opentelemetry.sdk.autoconfigure.spi.Ordered;
 import io.opentelemetry.sdk.autoconfigure.spi.internal.AutoConfigureListener;
 import io.opentelemetry.sdk.autoconfigure.spi.internal.ComponentProvider;
@@ -56,27 +55,8 @@
  * <h2>For Implementers</h2>
  *
  * <p>External consumers needing to parse OpenTelemetry YAML configuration files should use the same
- * Jackson ObjectMapper configuration for compatibility. This configuration is intentionally not
- * exposed as API to avoid coupling. Instead, copy the following setup:
- *
- * <pre>{@code
- * ObjectMapper mapper = new ObjectMapper()
- *     // Create empty object instances for keys which are present but have null values
- *     .setDefaultSetterInfo(JsonSetter.Value.forValueNulls(Nulls.AS_EMPTY));
- * // Boxed primitives which are present but have null values should be set to null,
- * // rather than empty instances
- * mapper.configOverride(String.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
- * mapper.configOverride(Integer.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
- * mapper.configOverride(Double.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
- * mapper.configOverride(Boolean.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
- * }</pre>
- *
- * <p><b>Why this configuration:</b>
- *
- * <ul>
- *   <li>Default behavior creates empty objects for null values to match YAML schema expectations
- *   <li>Boxed primitives remain null to distinguish between absent and explicitly null values
- * </ul>
+ * Jackson {@code ObjectMapper} configuration for compatibility. See {@link
+ * io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ModelMapper#MAPPER}.
  */
 public final class DeclarativeConfiguration {
 
@@ -87,34 +67,8 @@ public final class DeclarativeConfiguration {
   private static final ComponentLoader DEFAULT_COMPONENT_LOADER =
       ComponentLoader.forClassLoader(DeclarativeConfigProperties.class.getClassLoader());
 
-  /**
-   * ObjectMapper configured for YAML declarative configuration parsing.
-   *
-   * <p>Configuration:
-   *
-   * <ul>
-   *   <li>Default: Creates empty objects for present keys with null values
-   *   <li>Boxed primitives (String, Integer, Double, Boolean): Remain null when null
-   * </ul>
-   *
-   * <p>External consumers needing compatible parsing should copy this configuration. See class
-   * javadoc for details and code example.
-   */
   // Visible for testing
-  static final ObjectMapper MAPPER;
-
-  static {
-    MAPPER =
-        new ObjectMapper()
-            // Create empty object instances for keys which are present but have null values
-            .setDefaultSetterInfo(JsonSetter.Value.forValueNulls(Nulls.AS_EMPTY));
-    // Boxed primitives which are present but have null values should be set to null, rather than
-    // empty instances
-    MAPPER.configOverride(String.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
-    MAPPER.configOverride(Integer.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
-    MAPPER.configOverride(Double.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
-    MAPPER.configOverride(Boolean.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
-  }
+  static final ObjectMapper MAPPER = ModelMapper.MAPPER;
 
   private DeclarativeConfiguration() {}
 
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordProcessorFactory.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordProcessorFactory.java
index c1eea4047b1..81cfde81235 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordProcessorFactory.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordProcessorFactory.java
@@ -9,6 +9,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordProcessorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SimpleLogRecordProcessorModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.LogRecordProcessorModelAccessor;
 import io.opentelemetry.sdk.extension.incubator.logs.EventToSpanEventBridge;
 import io.opentelemetry.sdk.logs.LogRecordProcessor;
 import io.opentelemetry.sdk.logs.export.BatchLogRecordProcessor;
@@ -43,7 +44,7 @@ public LogRecordProcessor create(
     if (model.getSimple() != null) {
       return createSimpleLogRecordProcessor(model.getSimple(), context);
     }
-    if (model.getEventToSpanEventBridgeDevelopment() != null) {
+    if (LogRecordProcessorModelAccessor.getEventToSpanEventBridge(model) != null) {
       return EventToSpanEventBridge.create();
     }
 
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LoggerProviderFactory.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LoggerProviderFactory.java
index 2d09e147ae6..4cceee77991 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LoggerProviderFactory.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LoggerProviderFactory.java
@@ -14,6 +14,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalLoggerConfigModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalLoggerConfiguratorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalLoggerMatcherAndConfigModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.LoggerProviderModelAccessor;
 import io.opentelemetry.sdk.common.internal.ScopeConfigurator;
 import io.opentelemetry.sdk.common.internal.ScopeConfiguratorBuilder;
 import io.opentelemetry.sdk.logs.LogLimits;
@@ -64,7 +65,7 @@ public SdkLoggerProviderBuilder create(
     }
 
     ExperimentalLoggerConfiguratorModel loggerConfiguratorModel =
-        loggerProviderModel.getLoggerConfiguratorDevelopment();
+        LoggerProviderModelAccessor.getLoggerConfigurator(loggerProviderModel);
     if (loggerConfiguratorModel != null) {
       ExperimentalLoggerConfigModel defaultConfigModel = loggerConfiguratorModel.getDefaultConfig();
       ScopeConfiguratorBuilder<LoggerConfig> configuratorBuilder = ScopeConfigurator.builder();
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MeterProviderFactory.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MeterProviderFactory.java
index 919d7130d73..4eb8a061b01 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MeterProviderFactory.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MeterProviderFactory.java
@@ -16,6 +16,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalMeterConfigModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalMeterConfiguratorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalMeterMatcherAndConfigModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.MeterProviderModelAccessor;
 import io.opentelemetry.sdk.common.internal.ScopeConfigurator;
 import io.opentelemetry.sdk.common.internal.ScopeConfiguratorBuilder;
 import io.opentelemetry.sdk.metrics.SdkMeterProvider;
@@ -70,7 +71,7 @@ public SdkMeterProviderBuilder create(
     }
 
     ExperimentalMeterConfiguratorModel meterConfiguratorModel =
-        model.getMeterConfiguratorDevelopment();
+        MeterProviderModelAccessor.getMeterConfigurator(model);
     if (meterConfiguratorModel != null) {
       ExperimentalMeterConfigModel defaultConfigModel = meterConfiguratorModel.getDefaultConfig();
       ScopeConfiguratorBuilder<MeterConfig> configuratorBuilder = ScopeConfigurator.builder();
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricReaderFactory.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricReaderFactory.java
index 8fba29e0ad1..4d86c465b04 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricReaderFactory.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricReaderFactory.java
@@ -13,6 +13,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PullMetricExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PullMetricReaderModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PushMetricExporterModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.PeriodicMetricReaderModelAccessor;
 import io.opentelemetry.sdk.metrics.export.CardinalityLimitSelector;
 import io.opentelemetry.sdk.metrics.export.MetricExporter;
 import io.opentelemetry.sdk.metrics.export.MetricReader;
@@ -74,9 +75,9 @@ public MetricReaderAndCardinalityLimits create(
         cardinalityLimitSelector =
             CardinalityLimitsFactory.getInstance().create(model.getCardinalityLimits(), context);
       }
-      if (model.getMaxExportBatchSizeDevelopment() != null) {
-        SdkMeterProviderUtil.setMaxExportBatchSize(
-            builder, model.getMaxExportBatchSizeDevelopment());
+      Integer maxExportBatchSize = PeriodicMetricReaderModelAccessor.getMaxExportBatchSize(model);
+      if (maxExportBatchSize != null) {
+        SdkMeterProviderUtil.setMaxExportBatchSize(builder, maxExportBatchSize);
       }
 
       MetricReader reader = context.addCloseable(builder.build());
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ResourceFactory.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ResourceFactory.java
index 9f670487c28..f17f24cfade 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ResourceFactory.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ResourceFactory.java
@@ -14,6 +14,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ResourceModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalResourceDetectionModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalResourceDetectorModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ResourceModelAccessor;
 import io.opentelemetry.sdk.autoconfigure.spi.internal.DefaultConfigProperties;
 import io.opentelemetry.sdk.resources.Resource;
 import io.opentelemetry.sdk.resources.ResourceBuilder;
@@ -35,7 +36,7 @@ static ResourceFactory getInstance() {
   public Resource create(ResourceModel model, DeclarativeConfigContext context) {
     ResourceBuilder builder = Resource.getDefault().toBuilder();
 
-    ExperimentalResourceDetectionModel detectionModel = model.getDetectionDevelopment();
+    ExperimentalResourceDetectionModel detectionModel = ResourceModelAccessor.getDetection(model);
     if (detectionModel != null) {
       ResourceBuilder detectedResourceBuilder = Resource.builder();
 
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SamplerFactory.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SamplerFactory.java
index 0c746786b88..5b625a99615 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SamplerFactory.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SamplerFactory.java
@@ -8,7 +8,9 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ParentBasedSamplerModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TraceIdRatioBasedSamplerModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalComposableSamplerModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalProbabilitySamplerModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.SamplerModelAccessor;
 import io.opentelemetry.sdk.extension.incubator.trace.samplers.ComposableSampler;
 import io.opentelemetry.sdk.extension.incubator.trace.samplers.CompositeSampler;
 import io.opentelemetry.sdk.trace.samplers.ParentBasedSamplerBuilder;
@@ -43,12 +45,16 @@ public Sampler create(SamplerModel model, DeclarativeConfigContext context) {
     if (model.getParentBased() != null) {
       return createParedBasedSampler(model.getParentBased(), context);
     }
-    if (model.getProbabilityDevelopment() != null) {
-      return createProbabilitySampler(model.getProbabilityDevelopment());
+    ExperimentalProbabilitySamplerModel probabilityDevelopment =
+        SamplerModelAccessor.getProbability(model);
+    if (probabilityDevelopment != null) {
+      return createProbabilitySampler(probabilityDevelopment);
     }
-    if (model.getCompositeDevelopment() != null) {
+    ExperimentalComposableSamplerModel compositeDevelopment =
+        SamplerModelAccessor.getComposite(model);
+    if (compositeDevelopment != null) {
       return CompositeSampler.wrap(
-          ComposableSamplerFactory.getInstance().create(model.getCompositeDevelopment(), context));
+          ComposableSamplerFactory.getInstance().create(compositeDevelopment, context));
     }
 
     return context.loadComponent(Sampler.class, samplerKeyValue);
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/TracerProviderFactory.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/TracerProviderFactory.java
index 78ac20aff26..961ef5c893f 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/TracerProviderFactory.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/TracerProviderFactory.java
@@ -12,6 +12,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalTracerConfigModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalTracerConfiguratorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalTracerMatcherAndConfigModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.TracerProviderModelAccessor;
 import io.opentelemetry.sdk.common.internal.ScopeConfigurator;
 import io.opentelemetry.sdk.common.internal.ScopeConfiguratorBuilder;
 import io.opentelemetry.sdk.trace.SdkTracerProvider;
@@ -72,7 +73,7 @@ public SdkTracerProviderBuilder create(
     }
 
     ExperimentalTracerConfiguratorModel tracerConfiguratorModel =
-        tracerProviderModel.getTracerConfiguratorDevelopment();
+        TracerProviderModelAccessor.getTracerConfigurator(tracerProviderModel);
     if (tracerConfiguratorModel != null) {
       ExperimentalTracerConfigModel defaultConfigModel = tracerConfiguratorModel.getDefaultConfig();
       ScopeConfiguratorBuilder<TracerConfig> configuratorBuilder = ScopeConfigurator.builder();
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AggregationModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AggregationModel.java
index 245c3a1ef6a..07f1b0503f5 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AggregationModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AggregationModel.java
@@ -5,30 +5,67 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AggregationModel.BASE_2_EXPONENTIAL_BUCKET_HISTOGRAM;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AggregationModel.DEFAULT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AggregationModel.DROP;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AggregationModel.EXPLICIT_BUCKET_HISTOGRAM;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AggregationModel.LAST_VALUE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AggregationModel.SUM;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "default",
-  "drop",
-  "explicit_bucket_histogram",
-  "base2_exponential_bucket_histogram",
-  "last_value",
-  "sum"
+  DEFAULT,
+  DROP,
+  EXPLICIT_BUCKET_HISTOGRAM,
+  BASE_2_EXPONENTIAL_BUCKET_HISTOGRAM,
+  LAST_VALUE,
+  SUM
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class AggregationModel {
 
+  static final String DEFAULT = "default";
+  static final String DROP = "drop";
+  static final String EXPLICIT_BUCKET_HISTOGRAM = "explicit_bucket_histogram";
+  static final String BASE_2_EXPONENTIAL_BUCKET_HISTOGRAM = "base2_exponential_bucket_histogram";
+  static final String LAST_VALUE = "last_value";
+  static final String SUM = "sum";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(DEFAULT, DefaultAggregationModel.class);
+    STABLE_PROPERTIES.put(DROP, DropAggregationModel.class);
+    STABLE_PROPERTIES.put(EXPLICIT_BUCKET_HISTOGRAM, ExplicitBucketHistogramAggregationModel.class);
+    STABLE_PROPERTIES.put(
+        BASE_2_EXPONENTIAL_BUCKET_HISTOGRAM, Base2ExponentialBucketHistogramAggregationModel.class);
+    STABLE_PROPERTIES.put(LAST_VALUE, LastValueAggregationModel.class);
+    STABLE_PROPERTIES.put(SUM, SumAggregationModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private DefaultAggregationModel _default;
   @Nullable private DropAggregationModel drop;
   @Nullable private ExplicitBucketHistogramAggregationModel explicitBucketHistogram;
   @Nullable private Base2ExponentialBucketHistogramAggregationModel base2ExponentialBucketHistogram;
   @Nullable private LastValueAggregationModel lastValue;
   @Nullable private SumAggregationModel sum;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configures the stream to use the instrument kind to select an aggregation and advisory
@@ -38,13 +75,17 @@ public class AggregationModel {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("default")
+  @JsonProperty(DEFAULT)
   @Nullable
   public DefaultAggregationModel getDefault() {
+    if (_default == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          DEFAULT, extensionProperties, DefaultAggregationModel.class);
+    }
     return _default;
   }
 
-  @JsonProperty("default")
+  @JsonProperty(DEFAULT)
   public AggregationModel withDefault(DefaultAggregationModel _default) {
     this._default = _default;
     return this;
@@ -57,13 +98,17 @@ public AggregationModel withDefault(DefaultAggregationModel _default) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("drop")
+  @JsonProperty(DROP)
   @Nullable
   public DropAggregationModel getDrop() {
+    if (drop == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          DROP, extensionProperties, DropAggregationModel.class);
+    }
     return drop;
   }
 
-  @JsonProperty("drop")
+  @JsonProperty(DROP)
   public AggregationModel withDrop(DropAggregationModel drop) {
     this.drop = drop;
     return this;
@@ -77,13 +122,19 @@ public AggregationModel withDrop(DropAggregationModel drop) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("explicit_bucket_histogram")
+  @JsonProperty(EXPLICIT_BUCKET_HISTOGRAM)
   @Nullable
   public ExplicitBucketHistogramAggregationModel getExplicitBucketHistogram() {
+    if (explicitBucketHistogram == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EXPLICIT_BUCKET_HISTOGRAM,
+          extensionProperties,
+          ExplicitBucketHistogramAggregationModel.class);
+    }
     return explicitBucketHistogram;
   }
 
-  @JsonProperty("explicit_bucket_histogram")
+  @JsonProperty(EXPLICIT_BUCKET_HISTOGRAM)
   public AggregationModel withExplicitBucketHistogram(
       ExplicitBucketHistogramAggregationModel explicitBucketHistogram) {
     this.explicitBucketHistogram = explicitBucketHistogram;
@@ -99,13 +150,19 @@ public AggregationModel withExplicitBucketHistogram(
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("base2_exponential_bucket_histogram")
+  @JsonProperty(BASE_2_EXPONENTIAL_BUCKET_HISTOGRAM)
   @Nullable
   public Base2ExponentialBucketHistogramAggregationModel getBase2ExponentialBucketHistogram() {
+    if (base2ExponentialBucketHistogram == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          BASE_2_EXPONENTIAL_BUCKET_HISTOGRAM,
+          extensionProperties,
+          Base2ExponentialBucketHistogramAggregationModel.class);
+    }
     return base2ExponentialBucketHistogram;
   }
 
-  @JsonProperty("base2_exponential_bucket_histogram")
+  @JsonProperty(BASE_2_EXPONENTIAL_BUCKET_HISTOGRAM)
   public AggregationModel withBase2ExponentialBucketHistogram(
       Base2ExponentialBucketHistogramAggregationModel base2ExponentialBucketHistogram) {
     this.base2ExponentialBucketHistogram = base2ExponentialBucketHistogram;
@@ -119,13 +176,17 @@ public AggregationModel withBase2ExponentialBucketHistogram(
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("last_value")
+  @JsonProperty(LAST_VALUE)
   @Nullable
   public LastValueAggregationModel getLastValue() {
+    if (lastValue == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          LAST_VALUE, extensionProperties, LastValueAggregationModel.class);
+    }
     return lastValue;
   }
 
-  @JsonProperty("last_value")
+  @JsonProperty(LAST_VALUE)
   public AggregationModel withLastValue(LastValueAggregationModel lastValue) {
     this.lastValue = lastValue;
     return this;
@@ -138,18 +199,39 @@ public AggregationModel withLastValue(LastValueAggregationModel lastValue) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("sum")
+  @JsonProperty(SUM)
   @Nullable
   public SumAggregationModel getSum() {
+    if (sum == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          SUM, extensionProperties, SumAggregationModel.class);
+    }
     return sum;
   }
 
-  @JsonProperty("sum")
+  @JsonProperty(SUM)
   public AggregationModel withSum(SumAggregationModel sum) {
     this.sum = sum;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public AggregationModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "AggregationModel{"
@@ -165,6 +247,8 @@ public String toString() {
         + lastValue
         + ", sum="
         + sum
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -186,6 +270,8 @@ public int hashCode() {
     h ^= (this.lastValue == null) ? 0 : this.lastValue.hashCode();
     h *= 1000003;
     h ^= (this.sum == null) ? 0 : this.sum.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -207,7 +293,10 @@ public boolean equals(@Nullable Object o) {
           && (this.lastValue == null
               ? that.lastValue == null
               : this.lastValue.equals(that.lastValue))
-          && (this.sum == null ? that.sum == null : this.sum.equals(that.sum));
+          && (this.sum == null ? that.sum == null : this.sum.equals(that.sum))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AttributeLimitsModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AttributeLimitsModel.java
index ccaf1a8c9bd..df202f855c5 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AttributeLimitsModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AttributeLimitsModel.java
@@ -5,19 +5,43 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AttributeLimitsModel.ATTRIBUTE_COUNT_LIMIT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AttributeLimitsModel.ATTRIBUTE_VALUE_LENGTH_LIMIT;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"attribute_value_length_limit", "attribute_count_limit"})
+@JsonPropertyOrder({ATTRIBUTE_VALUE_LENGTH_LIMIT, ATTRIBUTE_COUNT_LIMIT})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class AttributeLimitsModel {
 
+  static final String ATTRIBUTE_VALUE_LENGTH_LIMIT = "attribute_value_length_limit";
+  static final String ATTRIBUTE_COUNT_LIMIT = "attribute_count_limit";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(ATTRIBUTE_VALUE_LENGTH_LIMIT, Integer.class);
+    STABLE_PROPERTIES.put(ATTRIBUTE_COUNT_LIMIT, Integer.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private Integer attributeValueLengthLimit;
   @Nullable private Integer attributeCountLimit;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure max attribute value size.
@@ -26,13 +50,17 @@ public class AttributeLimitsModel {
    *
    * <p>If omitted or null, there is no limit.
    */
-  @JsonProperty("attribute_value_length_limit")
+  @JsonProperty(ATTRIBUTE_VALUE_LENGTH_LIMIT)
   @Nullable
   public Integer getAttributeValueLengthLimit() {
+    if (attributeValueLengthLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ATTRIBUTE_VALUE_LENGTH_LIMIT, extensionProperties, Integer.class);
+    }
     return attributeValueLengthLimit;
   }
 
-  @JsonProperty("attribute_value_length_limit")
+  @JsonProperty(ATTRIBUTE_VALUE_LENGTH_LIMIT)
   public AttributeLimitsModel withAttributeValueLengthLimit(Integer attributeValueLengthLimit) {
     this.attributeValueLengthLimit = attributeValueLengthLimit;
     return this;
@@ -45,18 +73,39 @@ public AttributeLimitsModel withAttributeValueLengthLimit(Integer attributeValue
    *
    * <p>If omitted or null, 128 is used.
    */
-  @JsonProperty("attribute_count_limit")
+  @JsonProperty(ATTRIBUTE_COUNT_LIMIT)
   @Nullable
   public Integer getAttributeCountLimit() {
+    if (attributeCountLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ATTRIBUTE_COUNT_LIMIT, extensionProperties, Integer.class);
+    }
     return attributeCountLimit;
   }
 
-  @JsonProperty("attribute_count_limit")
+  @JsonProperty(ATTRIBUTE_COUNT_LIMIT)
   public AttributeLimitsModel withAttributeCountLimit(Integer attributeCountLimit) {
     this.attributeCountLimit = attributeCountLimit;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public AttributeLimitsModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "AttributeLimitsModel{"
@@ -64,6 +113,8 @@ public String toString() {
         + attributeValueLengthLimit
         + ", attributeCountLimit="
         + attributeCountLimit
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -74,6 +125,8 @@ public int hashCode() {
     h ^= (this.attributeValueLengthLimit == null) ? 0 : this.attributeValueLengthLimit.hashCode();
     h *= 1000003;
     h ^= (this.attributeCountLimit == null) ? 0 : this.attributeCountLimit.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -89,7 +142,10 @@ public boolean equals(@Nullable Object o) {
               : this.attributeValueLengthLimit.equals(that.attributeValueLengthLimit))
           && (this.attributeCountLimit == null
               ? that.attributeCountLimit == null
-              : this.attributeCountLimit.equals(that.attributeCountLimit));
+              : this.attributeCountLimit.equals(that.attributeCountLimit))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AttributeNameValueModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AttributeNameValueModel.java
index 4c4d0a48ba1..bc386a2ce79 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AttributeNameValueModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/AttributeNameValueModel.java
@@ -5,33 +5,63 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AttributeNameValueModel.NAME;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AttributeNameValueModel.TYPE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AttributeNameValueModel.VALUE;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"name", "value", "type"})
+@JsonPropertyOrder({NAME, VALUE, TYPE})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class AttributeNameValueModel {
 
+  static final String NAME = "name";
+  static final String VALUE = "value";
+  static final String TYPE = "type";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(NAME, String.class);
+    STABLE_PROPERTIES.put(VALUE, Object.class);
+    STABLE_PROPERTIES.put(TYPE, AttributeTypeModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String name;
   @Nullable private Object value;
   @Nullable private AttributeTypeModel type;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * The attribute name.
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("name")
+  @JsonProperty(NAME)
   @Nullable
   public String getName() {
+    if (name == null) {
+      return ExtensionPropertyUtil.getGraduated(NAME, extensionProperties, String.class);
+    }
     return name;
   }
 
-  @JsonProperty("name")
+  @JsonProperty(NAME)
   public AttributeNameValueModel withName(String name) {
     this.name = name;
     return this;
@@ -44,13 +74,16 @@ public AttributeNameValueModel withName(String name) {
    *
    * <p>Property must be present, but if null the entry is ignored.
    */
-  @JsonProperty("value")
+  @JsonProperty(VALUE)
   @Nullable
   public Object getValue() {
+    if (value == null) {
+      return ExtensionPropertyUtil.getGraduated(VALUE, extensionProperties, Object.class);
+    }
     return value;
   }
 
-  @JsonProperty("value")
+  @JsonProperty(VALUE)
   public AttributeNameValueModel withValue(Object value) {
     this.value = value;
     return this;
@@ -79,18 +112,39 @@ public AttributeNameValueModel withValue(Object value) {
    *
    * <p>If omitted, string is used.
    */
-  @JsonProperty("type")
+  @JsonProperty(TYPE)
   @Nullable
   public AttributeTypeModel getType() {
+    if (type == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          TYPE, extensionProperties, AttributeTypeModel.class);
+    }
     return type;
   }
 
-  @JsonProperty("type")
+  @JsonProperty(TYPE)
   public AttributeNameValueModel withType(AttributeTypeModel type) {
     this.type = type;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public AttributeNameValueModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "AttributeNameValueModel{"
@@ -100,6 +154,8 @@ public String toString() {
         + value
         + ", type="
         + type
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -112,6 +168,8 @@ public int hashCode() {
     h ^= (this.value == null) ? 0 : this.value.hashCode();
     h *= 1000003;
     h ^= (this.type == null) ? 0 : this.type.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -124,7 +182,10 @@ public boolean equals(@Nullable Object o) {
       AttributeNameValueModel that = (AttributeNameValueModel) o;
       return (this.name == null ? that.name == null : this.name.equals(that.name))
           && (this.value == null ? that.value == null : this.value.equals(that.value))
-          && (this.type == null ? that.type == null : this.type.equals(that.type));
+          && (this.type == null ? that.type == null : this.type.equals(that.type))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/Base2ExponentialBucketHistogramAggregationModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/Base2ExponentialBucketHistogramAggregationModel.java
index e0101f29bd6..b0a856449b0 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/Base2ExponentialBucketHistogramAggregationModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/Base2ExponentialBucketHistogramAggregationModel.java
@@ -5,33 +5,63 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.Base2ExponentialBucketHistogramAggregationModel.MAX_SCALE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.Base2ExponentialBucketHistogramAggregationModel.MAX_SIZE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.Base2ExponentialBucketHistogramAggregationModel.RECORD_MIN_MAX;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"max_scale", "max_size", "record_min_max"})
+@JsonPropertyOrder({MAX_SCALE, MAX_SIZE, RECORD_MIN_MAX})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class Base2ExponentialBucketHistogramAggregationModel {
 
+  static final String MAX_SCALE = "max_scale";
+  static final String MAX_SIZE = "max_size";
+  static final String RECORD_MIN_MAX = "record_min_max";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(MAX_SCALE, Integer.class);
+    STABLE_PROPERTIES.put(MAX_SIZE, Integer.class);
+    STABLE_PROPERTIES.put(RECORD_MIN_MAX, Boolean.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private Integer maxScale;
   @Nullable private Integer maxSize;
   @Nullable private Boolean recordMinMax;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure the max scale factor.
    *
    * <p>If omitted or null, 20 is used.
    */
-  @JsonProperty("max_scale")
+  @JsonProperty(MAX_SCALE)
   @Nullable
   public Integer getMaxScale() {
+    if (maxScale == null) {
+      return ExtensionPropertyUtil.getGraduated(MAX_SCALE, extensionProperties, Integer.class);
+    }
     return maxScale;
   }
 
-  @JsonProperty("max_scale")
+  @JsonProperty(MAX_SCALE)
   public Base2ExponentialBucketHistogramAggregationModel withMaxScale(Integer maxScale) {
     this.maxScale = maxScale;
     return this;
@@ -43,13 +73,16 @@ public Base2ExponentialBucketHistogramAggregationModel withMaxScale(Integer maxS
    *
    * <p>If omitted or null, 160 is used.
    */
-  @JsonProperty("max_size")
+  @JsonProperty(MAX_SIZE)
   @Nullable
   public Integer getMaxSize() {
+    if (maxSize == null) {
+      return ExtensionPropertyUtil.getGraduated(MAX_SIZE, extensionProperties, Integer.class);
+    }
     return maxSize;
   }
 
-  @JsonProperty("max_size")
+  @JsonProperty(MAX_SIZE)
   public Base2ExponentialBucketHistogramAggregationModel withMaxSize(Integer maxSize) {
     this.maxSize = maxSize;
     return this;
@@ -60,18 +93,39 @@ public Base2ExponentialBucketHistogramAggregationModel withMaxSize(Integer maxSi
    *
    * <p>If omitted or null, true is used.
    */
-  @JsonProperty("record_min_max")
+  @JsonProperty(RECORD_MIN_MAX)
   @Nullable
   public Boolean getRecordMinMax() {
+    if (recordMinMax == null) {
+      return ExtensionPropertyUtil.getGraduated(RECORD_MIN_MAX, extensionProperties, Boolean.class);
+    }
     return recordMinMax;
   }
 
-  @JsonProperty("record_min_max")
+  @JsonProperty(RECORD_MIN_MAX)
   public Base2ExponentialBucketHistogramAggregationModel withRecordMinMax(Boolean recordMinMax) {
     this.recordMinMax = recordMinMax;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public Base2ExponentialBucketHistogramAggregationModel withExtensionProperty(
+      String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "Base2ExponentialBucketHistogramAggregationModel{"
@@ -81,6 +135,8 @@ public String toString() {
         + maxSize
         + ", recordMinMax="
         + recordMinMax
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -93,6 +149,8 @@ public int hashCode() {
     h ^= (this.maxSize == null) ? 0 : this.maxSize.hashCode();
     h *= 1000003;
     h ^= (this.recordMinMax == null) ? 0 : this.recordMinMax.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -108,7 +166,10 @@ public boolean equals(@Nullable Object o) {
           && (this.maxSize == null ? that.maxSize == null : this.maxSize.equals(that.maxSize))
           && (this.recordMinMax == null
               ? that.recordMinMax == null
-              : this.recordMinMax.equals(that.recordMinMax));
+              : this.recordMinMax.equals(that.recordMinMax))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/BatchLogRecordProcessorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/BatchLogRecordProcessorModel.java
index 3d9ac80a3c2..880647a880e 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/BatchLogRecordProcessorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/BatchLogRecordProcessorModel.java
@@ -5,28 +5,61 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchLogRecordProcessorModel.EXPORTER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchLogRecordProcessorModel.EXPORT_TIMEOUT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchLogRecordProcessorModel.MAX_EXPORT_BATCH_SIZE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchLogRecordProcessorModel.MAX_QUEUE_SIZE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchLogRecordProcessorModel.SCHEDULE_DELAY;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "schedule_delay",
-  "export_timeout",
-  "max_queue_size",
-  "max_export_batch_size",
-  "exporter"
+  SCHEDULE_DELAY,
+  EXPORT_TIMEOUT,
+  MAX_QUEUE_SIZE,
+  MAX_EXPORT_BATCH_SIZE,
+  EXPORTER
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class BatchLogRecordProcessorModel {
 
+  static final String SCHEDULE_DELAY = "schedule_delay";
+  static final String EXPORT_TIMEOUT = "export_timeout";
+  static final String MAX_QUEUE_SIZE = "max_queue_size";
+  static final String MAX_EXPORT_BATCH_SIZE = "max_export_batch_size";
+  static final String EXPORTER = "exporter";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(SCHEDULE_DELAY, Integer.class);
+    STABLE_PROPERTIES.put(EXPORT_TIMEOUT, Integer.class);
+    STABLE_PROPERTIES.put(MAX_QUEUE_SIZE, Integer.class);
+    STABLE_PROPERTIES.put(MAX_EXPORT_BATCH_SIZE, Integer.class);
+    STABLE_PROPERTIES.put(EXPORTER, LogRecordExporterModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private Integer scheduleDelay;
   @Nullable private Integer exportTimeout;
   @Nullable private Integer maxQueueSize;
   @Nullable private Integer maxExportBatchSize;
   @Nullable private LogRecordExporterModel exporter;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure delay interval (in milliseconds) between two consecutive exports.
@@ -35,13 +68,16 @@ public class BatchLogRecordProcessorModel {
    *
    * <p>If omitted or null, 1000 is used.
    */
-  @JsonProperty("schedule_delay")
+  @JsonProperty(SCHEDULE_DELAY)
   @Nullable
   public Integer getScheduleDelay() {
+    if (scheduleDelay == null) {
+      return ExtensionPropertyUtil.getGraduated(SCHEDULE_DELAY, extensionProperties, Integer.class);
+    }
     return scheduleDelay;
   }
 
-  @JsonProperty("schedule_delay")
+  @JsonProperty(SCHEDULE_DELAY)
   public BatchLogRecordProcessorModel withScheduleDelay(Integer scheduleDelay) {
     this.scheduleDelay = scheduleDelay;
     return this;
@@ -54,13 +90,16 @@ public BatchLogRecordProcessorModel withScheduleDelay(Integer scheduleDelay) {
    *
    * <p>If omitted or null, 30000 is used.
    */
-  @JsonProperty("export_timeout")
+  @JsonProperty(EXPORT_TIMEOUT)
   @Nullable
   public Integer getExportTimeout() {
+    if (exportTimeout == null) {
+      return ExtensionPropertyUtil.getGraduated(EXPORT_TIMEOUT, extensionProperties, Integer.class);
+    }
     return exportTimeout;
   }
 
-  @JsonProperty("export_timeout")
+  @JsonProperty(EXPORT_TIMEOUT)
   public BatchLogRecordProcessorModel withExportTimeout(Integer exportTimeout) {
     this.exportTimeout = exportTimeout;
     return this;
@@ -71,13 +110,16 @@ public BatchLogRecordProcessorModel withExportTimeout(Integer exportTimeout) {
    *
    * <p>If omitted or null, 2048 is used.
    */
-  @JsonProperty("max_queue_size")
+  @JsonProperty(MAX_QUEUE_SIZE)
   @Nullable
   public Integer getMaxQueueSize() {
+    if (maxQueueSize == null) {
+      return ExtensionPropertyUtil.getGraduated(MAX_QUEUE_SIZE, extensionProperties, Integer.class);
+    }
     return maxQueueSize;
   }
 
-  @JsonProperty("max_queue_size")
+  @JsonProperty(MAX_QUEUE_SIZE)
   public BatchLogRecordProcessorModel withMaxQueueSize(Integer maxQueueSize) {
     this.maxQueueSize = maxQueueSize;
     return this;
@@ -88,13 +130,17 @@ public BatchLogRecordProcessorModel withMaxQueueSize(Integer maxQueueSize) {
    *
    * <p>If omitted or null, 512 is used.
    */
-  @JsonProperty("max_export_batch_size")
+  @JsonProperty(MAX_EXPORT_BATCH_SIZE)
   @Nullable
   public Integer getMaxExportBatchSize() {
+    if (maxExportBatchSize == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          MAX_EXPORT_BATCH_SIZE, extensionProperties, Integer.class);
+    }
     return maxExportBatchSize;
   }
 
-  @JsonProperty("max_export_batch_size")
+  @JsonProperty(MAX_EXPORT_BATCH_SIZE)
   public BatchLogRecordProcessorModel withMaxExportBatchSize(Integer maxExportBatchSize) {
     this.maxExportBatchSize = maxExportBatchSize;
     return this;
@@ -105,18 +151,39 @@ public BatchLogRecordProcessorModel withMaxExportBatchSize(Integer maxExportBatc
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   @Nullable
   public LogRecordExporterModel getExporter() {
+    if (exporter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EXPORTER, extensionProperties, LogRecordExporterModel.class);
+    }
     return exporter;
   }
 
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   public BatchLogRecordProcessorModel withExporter(LogRecordExporterModel exporter) {
     this.exporter = exporter;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public BatchLogRecordProcessorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "BatchLogRecordProcessorModel{"
@@ -130,6 +197,8 @@ public String toString() {
         + maxExportBatchSize
         + ", exporter="
         + exporter
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -146,6 +215,8 @@ public int hashCode() {
     h ^= (this.maxExportBatchSize == null) ? 0 : this.maxExportBatchSize.hashCode();
     h *= 1000003;
     h ^= (this.exporter == null) ? 0 : this.exporter.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -168,7 +239,10 @@ public boolean equals(@Nullable Object o) {
           && (this.maxExportBatchSize == null
               ? that.maxExportBatchSize == null
               : this.maxExportBatchSize.equals(that.maxExportBatchSize))
-          && (this.exporter == null ? that.exporter == null : this.exporter.equals(that.exporter));
+          && (this.exporter == null ? that.exporter == null : this.exporter.equals(that.exporter))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/BatchSpanProcessorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/BatchSpanProcessorModel.java
index 4671acf7957..fae445ee879 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/BatchSpanProcessorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/BatchSpanProcessorModel.java
@@ -5,28 +5,61 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchSpanProcessorModel.EXPORTER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchSpanProcessorModel.EXPORT_TIMEOUT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchSpanProcessorModel.MAX_EXPORT_BATCH_SIZE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchSpanProcessorModel.MAX_QUEUE_SIZE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchSpanProcessorModel.SCHEDULE_DELAY;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "schedule_delay",
-  "export_timeout",
-  "max_queue_size",
-  "max_export_batch_size",
-  "exporter"
+  SCHEDULE_DELAY,
+  EXPORT_TIMEOUT,
+  MAX_QUEUE_SIZE,
+  MAX_EXPORT_BATCH_SIZE,
+  EXPORTER
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class BatchSpanProcessorModel {
 
+  static final String SCHEDULE_DELAY = "schedule_delay";
+  static final String EXPORT_TIMEOUT = "export_timeout";
+  static final String MAX_QUEUE_SIZE = "max_queue_size";
+  static final String MAX_EXPORT_BATCH_SIZE = "max_export_batch_size";
+  static final String EXPORTER = "exporter";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(SCHEDULE_DELAY, Integer.class);
+    STABLE_PROPERTIES.put(EXPORT_TIMEOUT, Integer.class);
+    STABLE_PROPERTIES.put(MAX_QUEUE_SIZE, Integer.class);
+    STABLE_PROPERTIES.put(MAX_EXPORT_BATCH_SIZE, Integer.class);
+    STABLE_PROPERTIES.put(EXPORTER, SpanExporterModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private Integer scheduleDelay;
   @Nullable private Integer exportTimeout;
   @Nullable private Integer maxQueueSize;
   @Nullable private Integer maxExportBatchSize;
   @Nullable private SpanExporterModel exporter;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure delay interval (in milliseconds) between two consecutive exports.
@@ -35,13 +68,16 @@ public class BatchSpanProcessorModel {
    *
    * <p>If omitted or null, 5000 is used.
    */
-  @JsonProperty("schedule_delay")
+  @JsonProperty(SCHEDULE_DELAY)
   @Nullable
   public Integer getScheduleDelay() {
+    if (scheduleDelay == null) {
+      return ExtensionPropertyUtil.getGraduated(SCHEDULE_DELAY, extensionProperties, Integer.class);
+    }
     return scheduleDelay;
   }
 
-  @JsonProperty("schedule_delay")
+  @JsonProperty(SCHEDULE_DELAY)
   public BatchSpanProcessorModel withScheduleDelay(Integer scheduleDelay) {
     this.scheduleDelay = scheduleDelay;
     return this;
@@ -54,13 +90,16 @@ public BatchSpanProcessorModel withScheduleDelay(Integer scheduleDelay) {
    *
    * <p>If omitted or null, 30000 is used.
    */
-  @JsonProperty("export_timeout")
+  @JsonProperty(EXPORT_TIMEOUT)
   @Nullable
   public Integer getExportTimeout() {
+    if (exportTimeout == null) {
+      return ExtensionPropertyUtil.getGraduated(EXPORT_TIMEOUT, extensionProperties, Integer.class);
+    }
     return exportTimeout;
   }
 
-  @JsonProperty("export_timeout")
+  @JsonProperty(EXPORT_TIMEOUT)
   public BatchSpanProcessorModel withExportTimeout(Integer exportTimeout) {
     this.exportTimeout = exportTimeout;
     return this;
@@ -71,13 +110,16 @@ public BatchSpanProcessorModel withExportTimeout(Integer exportTimeout) {
    *
    * <p>If omitted or null, 2048 is used.
    */
-  @JsonProperty("max_queue_size")
+  @JsonProperty(MAX_QUEUE_SIZE)
   @Nullable
   public Integer getMaxQueueSize() {
+    if (maxQueueSize == null) {
+      return ExtensionPropertyUtil.getGraduated(MAX_QUEUE_SIZE, extensionProperties, Integer.class);
+    }
     return maxQueueSize;
   }
 
-  @JsonProperty("max_queue_size")
+  @JsonProperty(MAX_QUEUE_SIZE)
   public BatchSpanProcessorModel withMaxQueueSize(Integer maxQueueSize) {
     this.maxQueueSize = maxQueueSize;
     return this;
@@ -88,13 +130,17 @@ public BatchSpanProcessorModel withMaxQueueSize(Integer maxQueueSize) {
    *
    * <p>If omitted or null, 512 is used.
    */
-  @JsonProperty("max_export_batch_size")
+  @JsonProperty(MAX_EXPORT_BATCH_SIZE)
   @Nullable
   public Integer getMaxExportBatchSize() {
+    if (maxExportBatchSize == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          MAX_EXPORT_BATCH_SIZE, extensionProperties, Integer.class);
+    }
     return maxExportBatchSize;
   }
 
-  @JsonProperty("max_export_batch_size")
+  @JsonProperty(MAX_EXPORT_BATCH_SIZE)
   public BatchSpanProcessorModel withMaxExportBatchSize(Integer maxExportBatchSize) {
     this.maxExportBatchSize = maxExportBatchSize;
     return this;
@@ -105,18 +151,39 @@ public BatchSpanProcessorModel withMaxExportBatchSize(Integer maxExportBatchSize
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   @Nullable
   public SpanExporterModel getExporter() {
+    if (exporter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EXPORTER, extensionProperties, SpanExporterModel.class);
+    }
     return exporter;
   }
 
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   public BatchSpanProcessorModel withExporter(SpanExporterModel exporter) {
     this.exporter = exporter;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public BatchSpanProcessorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "BatchSpanProcessorModel{"
@@ -130,6 +197,8 @@ public String toString() {
         + maxExportBatchSize
         + ", exporter="
         + exporter
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -146,6 +215,8 @@ public int hashCode() {
     h ^= (this.maxExportBatchSize == null) ? 0 : this.maxExportBatchSize.hashCode();
     h *= 1000003;
     h ^= (this.exporter == null) ? 0 : this.exporter.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -168,7 +239,10 @@ public boolean equals(@Nullable Object o) {
           && (this.maxExportBatchSize == null
               ? that.maxExportBatchSize == null
               : this.maxExportBatchSize.equals(that.maxExportBatchSize))
-          && (this.exporter == null ? that.exporter == null : this.exporter.equals(that.exporter));
+          && (this.exporter == null ? that.exporter == null : this.exporter.equals(that.exporter))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/CardinalityLimitsModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/CardinalityLimitsModel.java
index 8fecb8b00e1..f1210f1d26d 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/CardinalityLimitsModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/CardinalityLimitsModel.java
@@ -5,26 +5,67 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.CardinalityLimitsModel.COUNTER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.CardinalityLimitsModel.DEFAULT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.CardinalityLimitsModel.GAUGE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.CardinalityLimitsModel.HISTOGRAM;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.CardinalityLimitsModel.OBSERVABLE_COUNTER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.CardinalityLimitsModel.OBSERVABLE_GAUGE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.CardinalityLimitsModel.OBSERVABLE_UP_DOWN_COUNTER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.CardinalityLimitsModel.UP_DOWN_COUNTER;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "default",
-  "counter",
-  "gauge",
-  "histogram",
-  "observable_counter",
-  "observable_gauge",
-  "observable_up_down_counter",
-  "up_down_counter"
+  DEFAULT,
+  COUNTER,
+  GAUGE,
+  HISTOGRAM,
+  OBSERVABLE_COUNTER,
+  OBSERVABLE_GAUGE,
+  OBSERVABLE_UP_DOWN_COUNTER,
+  UP_DOWN_COUNTER
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class CardinalityLimitsModel {
 
+  static final String DEFAULT = "default";
+  static final String COUNTER = "counter";
+  static final String GAUGE = "gauge";
+  static final String HISTOGRAM = "histogram";
+  static final String OBSERVABLE_COUNTER = "observable_counter";
+  static final String OBSERVABLE_GAUGE = "observable_gauge";
+  static final String OBSERVABLE_UP_DOWN_COUNTER = "observable_up_down_counter";
+  static final String UP_DOWN_COUNTER = "up_down_counter";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(DEFAULT, Integer.class);
+    STABLE_PROPERTIES.put(COUNTER, Integer.class);
+    STABLE_PROPERTIES.put(GAUGE, Integer.class);
+    STABLE_PROPERTIES.put(HISTOGRAM, Integer.class);
+    STABLE_PROPERTIES.put(OBSERVABLE_COUNTER, Integer.class);
+    STABLE_PROPERTIES.put(OBSERVABLE_GAUGE, Integer.class);
+    STABLE_PROPERTIES.put(OBSERVABLE_UP_DOWN_COUNTER, Integer.class);
+    STABLE_PROPERTIES.put(UP_DOWN_COUNTER, Integer.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private Integer _default;
   @Nullable private Integer counter;
   @Nullable private Integer gauge;
@@ -33,6 +74,7 @@ public class CardinalityLimitsModel {
   @Nullable private Integer observableGauge;
   @Nullable private Integer observableUpDownCounter;
   @Nullable private Integer upDownCounter;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure default cardinality limit for all instrument types.
@@ -41,13 +83,16 @@ public class CardinalityLimitsModel {
    *
    * <p>If omitted or null, 2000 is used.
    */
-  @JsonProperty("default")
+  @JsonProperty(DEFAULT)
   @Nullable
   public Integer getDefault() {
+    if (_default == null) {
+      return ExtensionPropertyUtil.getGraduated(DEFAULT, extensionProperties, Integer.class);
+    }
     return _default;
   }
 
-  @JsonProperty("default")
+  @JsonProperty(DEFAULT)
   public CardinalityLimitsModel withDefault(Integer _default) {
     this._default = _default;
     return this;
@@ -58,13 +103,16 @@ public CardinalityLimitsModel withDefault(Integer _default) {
    *
    * <p>If omitted or null, the value from .default is used.
    */
-  @JsonProperty("counter")
+  @JsonProperty(COUNTER)
   @Nullable
   public Integer getCounter() {
+    if (counter == null) {
+      return ExtensionPropertyUtil.getGraduated(COUNTER, extensionProperties, Integer.class);
+    }
     return counter;
   }
 
-  @JsonProperty("counter")
+  @JsonProperty(COUNTER)
   public CardinalityLimitsModel withCounter(Integer counter) {
     this.counter = counter;
     return this;
@@ -75,13 +123,16 @@ public CardinalityLimitsModel withCounter(Integer counter) {
    *
    * <p>If omitted or null, the value from .default is used.
    */
-  @JsonProperty("gauge")
+  @JsonProperty(GAUGE)
   @Nullable
   public Integer getGauge() {
+    if (gauge == null) {
+      return ExtensionPropertyUtil.getGraduated(GAUGE, extensionProperties, Integer.class);
+    }
     return gauge;
   }
 
-  @JsonProperty("gauge")
+  @JsonProperty(GAUGE)
   public CardinalityLimitsModel withGauge(Integer gauge) {
     this.gauge = gauge;
     return this;
@@ -92,13 +143,16 @@ public CardinalityLimitsModel withGauge(Integer gauge) {
    *
    * <p>If omitted or null, the value from .default is used.
    */
-  @JsonProperty("histogram")
+  @JsonProperty(HISTOGRAM)
   @Nullable
   public Integer getHistogram() {
+    if (histogram == null) {
+      return ExtensionPropertyUtil.getGraduated(HISTOGRAM, extensionProperties, Integer.class);
+    }
     return histogram;
   }
 
-  @JsonProperty("histogram")
+  @JsonProperty(HISTOGRAM)
   public CardinalityLimitsModel withHistogram(Integer histogram) {
     this.histogram = histogram;
     return this;
@@ -109,13 +163,17 @@ public CardinalityLimitsModel withHistogram(Integer histogram) {
    *
    * <p>If omitted or null, the value from .default is used.
    */
-  @JsonProperty("observable_counter")
+  @JsonProperty(OBSERVABLE_COUNTER)
   @Nullable
   public Integer getObservableCounter() {
+    if (observableCounter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OBSERVABLE_COUNTER, extensionProperties, Integer.class);
+    }
     return observableCounter;
   }
 
-  @JsonProperty("observable_counter")
+  @JsonProperty(OBSERVABLE_COUNTER)
   public CardinalityLimitsModel withObservableCounter(Integer observableCounter) {
     this.observableCounter = observableCounter;
     return this;
@@ -126,13 +184,17 @@ public CardinalityLimitsModel withObservableCounter(Integer observableCounter) {
    *
    * <p>If omitted or null, the value from .default is used.
    */
-  @JsonProperty("observable_gauge")
+  @JsonProperty(OBSERVABLE_GAUGE)
   @Nullable
   public Integer getObservableGauge() {
+    if (observableGauge == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OBSERVABLE_GAUGE, extensionProperties, Integer.class);
+    }
     return observableGauge;
   }
 
-  @JsonProperty("observable_gauge")
+  @JsonProperty(OBSERVABLE_GAUGE)
   public CardinalityLimitsModel withObservableGauge(Integer observableGauge) {
     this.observableGauge = observableGauge;
     return this;
@@ -143,13 +205,17 @@ public CardinalityLimitsModel withObservableGauge(Integer observableGauge) {
    *
    * <p>If omitted or null, the value from .default is used.
    */
-  @JsonProperty("observable_up_down_counter")
+  @JsonProperty(OBSERVABLE_UP_DOWN_COUNTER)
   @Nullable
   public Integer getObservableUpDownCounter() {
+    if (observableUpDownCounter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OBSERVABLE_UP_DOWN_COUNTER, extensionProperties, Integer.class);
+    }
     return observableUpDownCounter;
   }
 
-  @JsonProperty("observable_up_down_counter")
+  @JsonProperty(OBSERVABLE_UP_DOWN_COUNTER)
   public CardinalityLimitsModel withObservableUpDownCounter(Integer observableUpDownCounter) {
     this.observableUpDownCounter = observableUpDownCounter;
     return this;
@@ -160,18 +226,39 @@ public CardinalityLimitsModel withObservableUpDownCounter(Integer observableUpDo
    *
    * <p>If omitted or null, the value from .default is used.
    */
-  @JsonProperty("up_down_counter")
+  @JsonProperty(UP_DOWN_COUNTER)
   @Nullable
   public Integer getUpDownCounter() {
+    if (upDownCounter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          UP_DOWN_COUNTER, extensionProperties, Integer.class);
+    }
     return upDownCounter;
   }
 
-  @JsonProperty("up_down_counter")
+  @JsonProperty(UP_DOWN_COUNTER)
   public CardinalityLimitsModel withUpDownCounter(Integer upDownCounter) {
     this.upDownCounter = upDownCounter;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public CardinalityLimitsModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "CardinalityLimitsModel{"
@@ -191,6 +278,8 @@ public String toString() {
         + observableUpDownCounter
         + ", upDownCounter="
         + upDownCounter
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -213,6 +302,8 @@ public int hashCode() {
     h ^= (this.observableUpDownCounter == null) ? 0 : this.observableUpDownCounter.hashCode();
     h *= 1000003;
     h ^= (this.upDownCounter == null) ? 0 : this.upDownCounter.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -240,7 +331,10 @@ public boolean equals(@Nullable Object o) {
               : this.observableUpDownCounter.equals(that.observableUpDownCounter))
           && (this.upDownCounter == null
               ? that.upDownCounter == null
-              : this.upDownCounter.equals(that.upDownCounter));
+              : this.upDownCounter.equals(that.upDownCounter))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ConsoleMetricExporterModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ConsoleMetricExporterModel.java
index 2b5992ae800..d6a06622936 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ConsoleMetricExporterModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ConsoleMetricExporterModel.java
@@ -5,19 +5,44 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ConsoleMetricExporterModel.DEFAULT_HISTOGRAM_AGGREGATION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ConsoleMetricExporterModel.TEMPORALITY_PREFERENCE;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"temporality_preference", "default_histogram_aggregation"})
+@JsonPropertyOrder({TEMPORALITY_PREFERENCE, DEFAULT_HISTOGRAM_AGGREGATION})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class ConsoleMetricExporterModel {
 
+  static final String TEMPORALITY_PREFERENCE = "temporality_preference";
+  static final String DEFAULT_HISTOGRAM_AGGREGATION = "default_histogram_aggregation";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(TEMPORALITY_PREFERENCE, ExporterTemporalityPreferenceModel.class);
+    STABLE_PROPERTIES.put(
+        DEFAULT_HISTOGRAM_AGGREGATION, ExporterDefaultHistogramAggregationModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private ExporterTemporalityPreferenceModel temporalityPreference;
   @Nullable private ExporterDefaultHistogramAggregationModel defaultHistogramAggregation;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure temporality preference.
@@ -34,13 +59,17 @@ public class ConsoleMetricExporterModel {
    *
    * <p>If omitted, cumulative is used.
    */
-  @JsonProperty("temporality_preference")
+  @JsonProperty(TEMPORALITY_PREFERENCE)
   @Nullable
   public ExporterTemporalityPreferenceModel getTemporalityPreference() {
+    if (temporalityPreference == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          TEMPORALITY_PREFERENCE, extensionProperties, ExporterTemporalityPreferenceModel.class);
+    }
     return temporalityPreference;
   }
 
-  @JsonProperty("temporality_preference")
+  @JsonProperty(TEMPORALITY_PREFERENCE)
   public ConsoleMetricExporterModel withTemporalityPreference(
       ExporterTemporalityPreferenceModel temporalityPreference) {
     this.temporalityPreference = temporalityPreference;
@@ -60,19 +89,42 @@ public ConsoleMetricExporterModel withTemporalityPreference(
    *
    * <p>If omitted, explicit_bucket_histogram is used.
    */
-  @JsonProperty("default_histogram_aggregation")
+  @JsonProperty(DEFAULT_HISTOGRAM_AGGREGATION)
   @Nullable
   public ExporterDefaultHistogramAggregationModel getDefaultHistogramAggregation() {
+    if (defaultHistogramAggregation == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          DEFAULT_HISTOGRAM_AGGREGATION,
+          extensionProperties,
+          ExporterDefaultHistogramAggregationModel.class);
+    }
     return defaultHistogramAggregation;
   }
 
-  @JsonProperty("default_histogram_aggregation")
+  @JsonProperty(DEFAULT_HISTOGRAM_AGGREGATION)
   public ConsoleMetricExporterModel withDefaultHistogramAggregation(
       ExporterDefaultHistogramAggregationModel defaultHistogramAggregation) {
     this.defaultHistogramAggregation = defaultHistogramAggregation;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public ConsoleMetricExporterModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "ConsoleMetricExporterModel{"
@@ -80,6 +132,8 @@ public String toString() {
         + temporalityPreference
         + ", defaultHistogramAggregation="
         + defaultHistogramAggregation
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -93,6 +147,8 @@ public int hashCode() {
         (this.defaultHistogramAggregation == null)
             ? 0
             : this.defaultHistogramAggregation.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -108,7 +164,10 @@ public boolean equals(@Nullable Object o) {
               : this.temporalityPreference.equals(that.temporalityPreference))
           && (this.defaultHistogramAggregation == null
               ? that.defaultHistogramAggregation == null
-              : this.defaultHistogramAggregation.equals(that.defaultHistogramAggregation));
+              : this.defaultHistogramAggregation.equals(that.defaultHistogramAggregation))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/DistributionModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/DistributionModel.java
index b5960eeae3c..5d3bccf53fc 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/DistributionModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/DistributionModel.java
@@ -9,6 +9,8 @@
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
@@ -19,30 +21,37 @@
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class DistributionModel {
 
-  private Map<String, DistributionPropertyModel> additionalProperties =
-      new LinkedHashMap<String, DistributionPropertyModel>();
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   @JsonAnyGetter
-  public Map<String, DistributionPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return extensionProperties;
   }
 
   @JsonAnySetter
-  public DistributionModel withAdditionalProperty(String name, DistributionPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public DistributionModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        Collections.emptyMap(),
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
   @Override
   public String toString() {
-    return "DistributionModel{" + "additionalProperties=" + additionalProperties + "}";
+    return "DistributionModel{" + "extensionProperties=" + extensionProperties + "}";
   }
 
   @Override
   public int hashCode() {
     int h = 1;
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -53,9 +62,9 @@ public boolean equals(@Nullable Object o) {
     }
     if (o instanceof DistributionModel) {
       DistributionModel that = (DistributionModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
+      return (this.extensionProperties == null
+          ? that.extensionProperties == null
+          : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/DistributionPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/DistributionPropertyModel.java
deleted file mode 100644
index 321e484d8b5..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/DistributionPropertyModel.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class DistributionPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public DistributionPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "DistributionPropertyModel{" + "additionalProperties=" + additionalProperties + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof DistributionPropertyModel) {
-      DistributionPropertyModel that = (DistributionPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ExplicitBucketHistogramAggregationModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ExplicitBucketHistogramAggregationModel.java
index 87c083d22b3..9c839ca89ed 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ExplicitBucketHistogramAggregationModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ExplicitBucketHistogramAggregationModel.java
@@ -5,20 +5,43 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ExplicitBucketHistogramAggregationModel.BOUNDARIES;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ExplicitBucketHistogramAggregationModel.RECORD_MIN_MAX;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"boundaries", "record_min_max"})
+@JsonPropertyOrder({BOUNDARIES, RECORD_MIN_MAX})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class ExplicitBucketHistogramAggregationModel {
 
+  static final String BOUNDARIES = "boundaries";
+  static final String RECORD_MIN_MAX = "record_min_max";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(RECORD_MIN_MAX, Boolean.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private List<Double> boundaries;
   @Nullable private Boolean recordMinMax;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure bucket boundaries.
@@ -26,13 +49,13 @@ public class ExplicitBucketHistogramAggregationModel {
    * <p>If omitted, [0, 5, 10, 25, 50, 75, 100, 250, 500, 750, 1000, 2500, 5000, 7500, 10000] is
    * used.
    */
-  @JsonProperty("boundaries")
+  @JsonProperty(BOUNDARIES)
   @Nullable
   public List<Double> getBoundaries() {
     return boundaries;
   }
 
-  @JsonProperty("boundaries")
+  @JsonProperty(BOUNDARIES)
   public ExplicitBucketHistogramAggregationModel withBoundaries(List<Double> boundaries) {
     this.boundaries = boundaries;
     return this;
@@ -43,18 +66,39 @@ public ExplicitBucketHistogramAggregationModel withBoundaries(List<Double> bound
    *
    * <p>If omitted or null, true is used.
    */
-  @JsonProperty("record_min_max")
+  @JsonProperty(RECORD_MIN_MAX)
   @Nullable
   public Boolean getRecordMinMax() {
+    if (recordMinMax == null) {
+      return ExtensionPropertyUtil.getGraduated(RECORD_MIN_MAX, extensionProperties, Boolean.class);
+    }
     return recordMinMax;
   }
 
-  @JsonProperty("record_min_max")
+  @JsonProperty(RECORD_MIN_MAX)
   public ExplicitBucketHistogramAggregationModel withRecordMinMax(Boolean recordMinMax) {
     this.recordMinMax = recordMinMax;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public ExplicitBucketHistogramAggregationModel withExtensionProperty(
+      String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "ExplicitBucketHistogramAggregationModel{"
@@ -62,6 +106,8 @@ public String toString() {
         + boundaries
         + ", recordMinMax="
         + recordMinMax
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -72,6 +118,8 @@ public int hashCode() {
     h ^= (this.boundaries == null) ? 0 : this.boundaries.hashCode();
     h *= 1000003;
     h ^= (this.recordMinMax == null) ? 0 : this.recordMinMax.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -87,7 +135,10 @@ public boolean equals(@Nullable Object o) {
               : this.boundaries.equals(that.boundaries))
           && (this.recordMinMax == null
               ? that.recordMinMax == null
-              : this.recordMinMax.equals(that.recordMinMax));
+              : this.recordMinMax.equals(that.recordMinMax))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/GrpcTlsModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/GrpcTlsModel.java
index f74ef2effc2..45d306f3c35 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/GrpcTlsModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/GrpcTlsModel.java
@@ -5,21 +5,51 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.GrpcTlsModel.CA_FILE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.GrpcTlsModel.CERT_FILE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.GrpcTlsModel.INSECURE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.GrpcTlsModel.KEY_FILE;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"ca_file", "key_file", "cert_file", "insecure"})
+@JsonPropertyOrder({CA_FILE, KEY_FILE, CERT_FILE, INSECURE})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class GrpcTlsModel {
 
+  static final String CA_FILE = "ca_file";
+  static final String KEY_FILE = "key_file";
+  static final String CERT_FILE = "cert_file";
+  static final String INSECURE = "insecure";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(CA_FILE, String.class);
+    STABLE_PROPERTIES.put(KEY_FILE, String.class);
+    STABLE_PROPERTIES.put(CERT_FILE, String.class);
+    STABLE_PROPERTIES.put(INSECURE, Boolean.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String caFile;
   @Nullable private String keyFile;
   @Nullable private String certFile;
   @Nullable private Boolean insecure;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure certificate used to verify a server's TLS credentials.
@@ -28,13 +58,16 @@ public class GrpcTlsModel {
    *
    * <p>If omitted or null, system default certificate verification is used for secure connections.
    */
-  @JsonProperty("ca_file")
+  @JsonProperty(CA_FILE)
   @Nullable
   public String getCaFile() {
+    if (caFile == null) {
+      return ExtensionPropertyUtil.getGraduated(CA_FILE, extensionProperties, String.class);
+    }
     return caFile;
   }
 
-  @JsonProperty("ca_file")
+  @JsonProperty(CA_FILE)
   public GrpcTlsModel withCaFile(String caFile) {
     this.caFile = caFile;
     return this;
@@ -48,13 +81,16 @@ public GrpcTlsModel withCaFile(String caFile) {
    *
    * <p>If omitted or null, mTLS is not used.
    */
-  @JsonProperty("key_file")
+  @JsonProperty(KEY_FILE)
   @Nullable
   public String getKeyFile() {
+    if (keyFile == null) {
+      return ExtensionPropertyUtil.getGraduated(KEY_FILE, extensionProperties, String.class);
+    }
     return keyFile;
   }
 
-  @JsonProperty("key_file")
+  @JsonProperty(KEY_FILE)
   public GrpcTlsModel withKeyFile(String keyFile) {
     this.keyFile = keyFile;
     return this;
@@ -68,13 +104,16 @@ public GrpcTlsModel withKeyFile(String keyFile) {
    *
    * <p>If omitted or null, mTLS is not used.
    */
-  @JsonProperty("cert_file")
+  @JsonProperty(CERT_FILE)
   @Nullable
   public String getCertFile() {
+    if (certFile == null) {
+      return ExtensionPropertyUtil.getGraduated(CERT_FILE, extensionProperties, String.class);
+    }
     return certFile;
   }
 
-  @JsonProperty("cert_file")
+  @JsonProperty(CERT_FILE)
   public GrpcTlsModel withCertFile(String certFile) {
     this.certFile = certFile;
     return this;
@@ -88,18 +127,38 @@ public GrpcTlsModel withCertFile(String certFile) {
    *
    * <p>If omitted or null, false is used.
    */
-  @JsonProperty("insecure")
+  @JsonProperty(INSECURE)
   @Nullable
   public Boolean getInsecure() {
+    if (insecure == null) {
+      return ExtensionPropertyUtil.getGraduated(INSECURE, extensionProperties, Boolean.class);
+    }
     return insecure;
   }
 
-  @JsonProperty("insecure")
+  @JsonProperty(INSECURE)
   public GrpcTlsModel withInsecure(Boolean insecure) {
     this.insecure = insecure;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public GrpcTlsModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "GrpcTlsModel{"
@@ -111,6 +170,8 @@ public String toString() {
         + certFile
         + ", insecure="
         + insecure
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -125,6 +186,8 @@ public int hashCode() {
     h ^= (this.certFile == null) ? 0 : this.certFile.hashCode();
     h *= 1000003;
     h ^= (this.insecure == null) ? 0 : this.insecure.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -138,7 +201,10 @@ public boolean equals(@Nullable Object o) {
       return (this.caFile == null ? that.caFile == null : this.caFile.equals(that.caFile))
           && (this.keyFile == null ? that.keyFile == null : this.keyFile.equals(that.keyFile))
           && (this.certFile == null ? that.certFile == null : this.certFile.equals(that.certFile))
-          && (this.insecure == null ? that.insecure == null : this.insecure.equals(that.insecure));
+          && (this.insecure == null ? that.insecure == null : this.insecure.equals(that.insecure))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/HttpTlsModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/HttpTlsModel.java
index b87893d3f0c..3d7f27590d8 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/HttpTlsModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/HttpTlsModel.java
@@ -5,20 +5,47 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.HttpTlsModel.CA_FILE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.HttpTlsModel.CERT_FILE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.HttpTlsModel.KEY_FILE;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"ca_file", "key_file", "cert_file"})
+@JsonPropertyOrder({CA_FILE, KEY_FILE, CERT_FILE})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class HttpTlsModel {
 
+  static final String CA_FILE = "ca_file";
+  static final String KEY_FILE = "key_file";
+  static final String CERT_FILE = "cert_file";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(CA_FILE, String.class);
+    STABLE_PROPERTIES.put(KEY_FILE, String.class);
+    STABLE_PROPERTIES.put(CERT_FILE, String.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String caFile;
   @Nullable private String keyFile;
   @Nullable private String certFile;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure certificate used to verify a server's TLS credentials.
@@ -27,13 +54,16 @@ public class HttpTlsModel {
    *
    * <p>If omitted or null, system default certificate verification is used for secure connections.
    */
-  @JsonProperty("ca_file")
+  @JsonProperty(CA_FILE)
   @Nullable
   public String getCaFile() {
+    if (caFile == null) {
+      return ExtensionPropertyUtil.getGraduated(CA_FILE, extensionProperties, String.class);
+    }
     return caFile;
   }
 
-  @JsonProperty("ca_file")
+  @JsonProperty(CA_FILE)
   public HttpTlsModel withCaFile(String caFile) {
     this.caFile = caFile;
     return this;
@@ -47,13 +77,16 @@ public HttpTlsModel withCaFile(String caFile) {
    *
    * <p>If omitted or null, mTLS is not used.
    */
-  @JsonProperty("key_file")
+  @JsonProperty(KEY_FILE)
   @Nullable
   public String getKeyFile() {
+    if (keyFile == null) {
+      return ExtensionPropertyUtil.getGraduated(KEY_FILE, extensionProperties, String.class);
+    }
     return keyFile;
   }
 
-  @JsonProperty("key_file")
+  @JsonProperty(KEY_FILE)
   public HttpTlsModel withKeyFile(String keyFile) {
     this.keyFile = keyFile;
     return this;
@@ -67,18 +100,38 @@ public HttpTlsModel withKeyFile(String keyFile) {
    *
    * <p>If omitted or null, mTLS is not used.
    */
-  @JsonProperty("cert_file")
+  @JsonProperty(CERT_FILE)
   @Nullable
   public String getCertFile() {
+    if (certFile == null) {
+      return ExtensionPropertyUtil.getGraduated(CERT_FILE, extensionProperties, String.class);
+    }
     return certFile;
   }
 
-  @JsonProperty("cert_file")
+  @JsonProperty(CERT_FILE)
   public HttpTlsModel withCertFile(String certFile) {
     this.certFile = certFile;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public HttpTlsModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "HttpTlsModel{"
@@ -88,6 +141,8 @@ public String toString() {
         + keyFile
         + ", certFile="
         + certFile
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -100,6 +155,8 @@ public int hashCode() {
     h ^= (this.keyFile == null) ? 0 : this.keyFile.hashCode();
     h *= 1000003;
     h ^= (this.certFile == null) ? 0 : this.certFile.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -112,7 +169,10 @@ public boolean equals(@Nullable Object o) {
       HttpTlsModel that = (HttpTlsModel) o;
       return (this.caFile == null ? that.caFile == null : this.caFile.equals(that.caFile))
           && (this.keyFile == null ? that.keyFile == null : this.keyFile.equals(that.keyFile))
-          && (this.certFile == null ? that.certFile == null : this.certFile.equals(that.certFile));
+          && (this.certFile == null ? that.certFile == null : this.certFile.equals(that.certFile))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IdGeneratorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IdGeneratorModel.java
index fb60f7df2ee..8b0cfcce916 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IdGeneratorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IdGeneratorModel.java
@@ -5,50 +5,75 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.IdGeneratorModel.RANDOM;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"random"})
+@JsonPropertyOrder({RANDOM})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class IdGeneratorModel {
 
+  static final String RANDOM = "random";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(RANDOM, RandomIdGeneratorModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
   @Nullable private RandomIdGeneratorModel random;
-  private Map<String, IdGeneratorPropertyModel> additionalProperties =
-      new LinkedHashMap<String, IdGeneratorPropertyModel>();
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure the ID generator to randomly generate TraceIds and SpanIds (spec default).
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("random")
+  @JsonProperty(RANDOM)
   @Nullable
   public RandomIdGeneratorModel getRandom() {
+    if (random == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          RANDOM, extensionProperties, RandomIdGeneratorModel.class);
+    }
     return random;
   }
 
-  @JsonProperty("random")
+  @JsonProperty(RANDOM)
   public IdGeneratorModel withRandom(RandomIdGeneratorModel random) {
     this.random = random;
     return this;
   }
 
   @JsonAnyGetter
-  public Map<String, IdGeneratorPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public IdGeneratorModel withAdditionalProperty(String name, IdGeneratorPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public IdGeneratorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -57,8 +82,8 @@ public String toString() {
     return "IdGeneratorModel{"
         + "random="
         + random
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -68,7 +93,7 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.random == null) ? 0 : this.random.hashCode();
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -80,9 +105,9 @@ public boolean equals(@Nullable Object o) {
     if (o instanceof IdGeneratorModel) {
       IdGeneratorModel that = (IdGeneratorModel) o;
       return (this.random == null ? that.random == null : this.random.equals(that.random))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IdGeneratorPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IdGeneratorPropertyModel.java
deleted file mode 100644
index abb1bee2693..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IdGeneratorPropertyModel.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class IdGeneratorPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public IdGeneratorPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "IdGeneratorPropertyModel{" + "additionalProperties=" + additionalProperties + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof IdGeneratorPropertyModel) {
-      IdGeneratorPropertyModel that = (IdGeneratorPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IncludeExcludeModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IncludeExcludeModel.java
index 7f46b883948..a61bf4a573a 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IncludeExcludeModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/IncludeExcludeModel.java
@@ -5,6 +5,9 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.IncludeExcludeModel.EXCLUDED;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.IncludeExcludeModel.INCLUDED;
+
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
@@ -13,10 +16,13 @@
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"included", "excluded"})
+@JsonPropertyOrder({INCLUDED, EXCLUDED})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class IncludeExcludeModel {
 
+  static final String INCLUDED = "included";
+  static final String EXCLUDED = "excluded";
+
   @Nullable private List<String> included;
   @Nullable private List<String> excluded;
 
@@ -32,13 +38,13 @@ public class IncludeExcludeModel {
    *
    * <p>If omitted, all values are included.
    */
-  @JsonProperty("included")
+  @JsonProperty(INCLUDED)
   @Nullable
   public List<String> getIncluded() {
     return included;
   }
 
-  @JsonProperty("included")
+  @JsonProperty(INCLUDED)
   public IncludeExcludeModel withIncluded(List<String> included) {
     this.included = included;
     return this;
@@ -57,13 +63,13 @@ public IncludeExcludeModel withIncluded(List<String> included) {
    *
    * <p>If omitted, .included attributes are included.
    */
-  @JsonProperty("excluded")
+  @JsonProperty(EXCLUDED)
   @Nullable
   public List<String> getExcluded() {
     return excluded;
   }
 
-  @JsonProperty("excluded")
+  @JsonProperty(EXCLUDED)
   public IncludeExcludeModel withExcluded(List<String> excluded) {
     this.excluded = excluded;
     return this;
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordExporterModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordExporterModel.java
index aa34ebe0f89..01b0a6b7c38 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordExporterModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordExporterModel.java
@@ -5,41 +5,64 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordExporterModel.CONSOLE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordExporterModel.OTLP_GRPC;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordExporterModel.OTLP_HTTP;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.LogRecordExporterModelAccessor.EXPERIMENTAL_PROPERTIES;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalOtlpFileExporterModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"otlp_http", "otlp_grpc", "otlp_file/development", "console"})
+@JsonPropertyOrder({OTLP_HTTP, OTLP_GRPC, CONSOLE})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class LogRecordExporterModel {
 
+  static final String OTLP_HTTP = "otlp_http";
+  static final String OTLP_GRPC = "otlp_grpc";
+  static final String CONSOLE = "console";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(OTLP_HTTP, OtlpHttpExporterModel.class);
+    STABLE_PROPERTIES.put(OTLP_GRPC, OtlpGrpcExporterModel.class);
+    STABLE_PROPERTIES.put(CONSOLE, ConsoleExporterModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
   @Nullable private OtlpHttpExporterModel otlpHttp;
   @Nullable private OtlpGrpcExporterModel otlpGrpc;
-  @Nullable private ExperimentalOtlpFileExporterModel otlpFileDevelopment;
   @Nullable private ConsoleExporterModel console;
-  private Map<String, LogRecordExporterPropertyModel> additionalProperties =
-      new LinkedHashMap<String, LogRecordExporterPropertyModel>();
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure exporter to be OTLP with HTTP transport.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("otlp_http")
+  @JsonProperty(OTLP_HTTP)
   @Nullable
   public OtlpHttpExporterModel getOtlpHttp() {
+    if (otlpHttp == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OTLP_HTTP, extensionProperties, OtlpHttpExporterModel.class);
+    }
     return otlpHttp;
   }
 
-  @JsonProperty("otlp_http")
+  @JsonProperty(OTLP_HTTP)
   public LogRecordExporterModel withOtlpHttp(OtlpHttpExporterModel otlpHttp) {
     this.otlpHttp = otlpHttp;
     return this;
@@ -50,62 +73,57 @@ public LogRecordExporterModel withOtlpHttp(OtlpHttpExporterModel otlpHttp) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("otlp_grpc")
+  @JsonProperty(OTLP_GRPC)
   @Nullable
   public OtlpGrpcExporterModel getOtlpGrpc() {
+    if (otlpGrpc == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OTLP_GRPC, extensionProperties, OtlpGrpcExporterModel.class);
+    }
     return otlpGrpc;
   }
 
-  @JsonProperty("otlp_grpc")
+  @JsonProperty(OTLP_GRPC)
   public LogRecordExporterModel withOtlpGrpc(OtlpGrpcExporterModel otlpGrpc) {
     this.otlpGrpc = otlpGrpc;
     return this;
   }
 
-  /**
-   * Configure exporter to be OTLP with file transport.
-   *
-   * <p>If omitted, ignore.
-   */
-  @JsonProperty("otlp_file/development")
-  @Nullable
-  public ExperimentalOtlpFileExporterModel getOtlpFileDevelopment() {
-    return otlpFileDevelopment;
-  }
-
-  @JsonProperty("otlp_file/development")
-  public LogRecordExporterModel withOtlpFileDevelopment(
-      ExperimentalOtlpFileExporterModel otlpFileDevelopment) {
-    this.otlpFileDevelopment = otlpFileDevelopment;
-    return this;
-  }
-
   /**
    * Configure exporter to be console.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("console")
+  @JsonProperty(CONSOLE)
   @Nullable
   public ConsoleExporterModel getConsole() {
+    if (console == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          CONSOLE, extensionProperties, ConsoleExporterModel.class);
+    }
     return console;
   }
 
-  @JsonProperty("console")
+  @JsonProperty(CONSOLE)
   public LogRecordExporterModel withConsole(ConsoleExporterModel console) {
     this.console = console;
     return this;
   }
 
   @JsonAnyGetter
-  public Map<String, LogRecordExporterPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public LogRecordExporterModel withAdditionalProperty(
-      String name, LogRecordExporterPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public LogRecordExporterModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -116,12 +134,10 @@ public String toString() {
         + otlpHttp
         + ", otlpGrpc="
         + otlpGrpc
-        + ", otlpFileDevelopment="
-        + otlpFileDevelopment
         + ", console="
         + console
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -133,11 +149,9 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.otlpGrpc == null) ? 0 : this.otlpGrpc.hashCode();
     h *= 1000003;
-    h ^= (this.otlpFileDevelopment == null) ? 0 : this.otlpFileDevelopment.hashCode();
-    h *= 1000003;
     h ^= (this.console == null) ? 0 : this.console.hashCode();
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -150,13 +164,10 @@ public boolean equals(@Nullable Object o) {
       LogRecordExporterModel that = (LogRecordExporterModel) o;
       return (this.otlpHttp == null ? that.otlpHttp == null : this.otlpHttp.equals(that.otlpHttp))
           && (this.otlpGrpc == null ? that.otlpGrpc == null : this.otlpGrpc.equals(that.otlpGrpc))
-          && (this.otlpFileDevelopment == null
-              ? that.otlpFileDevelopment == null
-              : this.otlpFileDevelopment.equals(that.otlpFileDevelopment))
           && (this.console == null ? that.console == null : this.console.equals(that.console))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordExporterPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordExporterPropertyModel.java
deleted file mode 100644
index 5a462047081..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordExporterPropertyModel.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class LogRecordExporterPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public LogRecordExporterPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "LogRecordExporterPropertyModel{" + "additionalProperties=" + additionalProperties + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof LogRecordExporterPropertyModel) {
-      LogRecordExporterPropertyModel that = (LogRecordExporterPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordLimitsModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordLimitsModel.java
index 24e13258133..e2319a88847 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordLimitsModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordLimitsModel.java
@@ -5,19 +5,43 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordLimitsModel.ATTRIBUTE_COUNT_LIMIT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordLimitsModel.ATTRIBUTE_VALUE_LENGTH_LIMIT;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"attribute_value_length_limit", "attribute_count_limit"})
+@JsonPropertyOrder({ATTRIBUTE_VALUE_LENGTH_LIMIT, ATTRIBUTE_COUNT_LIMIT})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class LogRecordLimitsModel {
 
+  static final String ATTRIBUTE_VALUE_LENGTH_LIMIT = "attribute_value_length_limit";
+  static final String ATTRIBUTE_COUNT_LIMIT = "attribute_count_limit";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(ATTRIBUTE_VALUE_LENGTH_LIMIT, Integer.class);
+    STABLE_PROPERTIES.put(ATTRIBUTE_COUNT_LIMIT, Integer.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private Integer attributeValueLengthLimit;
   @Nullable private Integer attributeCountLimit;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure max attribute value size. Overrides .attribute_limits.attribute_value_length_limit.
@@ -26,13 +50,17 @@ public class LogRecordLimitsModel {
    *
    * <p>If omitted or null, there is no limit.
    */
-  @JsonProperty("attribute_value_length_limit")
+  @JsonProperty(ATTRIBUTE_VALUE_LENGTH_LIMIT)
   @Nullable
   public Integer getAttributeValueLengthLimit() {
+    if (attributeValueLengthLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ATTRIBUTE_VALUE_LENGTH_LIMIT, extensionProperties, Integer.class);
+    }
     return attributeValueLengthLimit;
   }
 
-  @JsonProperty("attribute_value_length_limit")
+  @JsonProperty(ATTRIBUTE_VALUE_LENGTH_LIMIT)
   public LogRecordLimitsModel withAttributeValueLengthLimit(Integer attributeValueLengthLimit) {
     this.attributeValueLengthLimit = attributeValueLengthLimit;
     return this;
@@ -45,18 +73,39 @@ public LogRecordLimitsModel withAttributeValueLengthLimit(Integer attributeValue
    *
    * <p>If omitted or null, 128 is used.
    */
-  @JsonProperty("attribute_count_limit")
+  @JsonProperty(ATTRIBUTE_COUNT_LIMIT)
   @Nullable
   public Integer getAttributeCountLimit() {
+    if (attributeCountLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ATTRIBUTE_COUNT_LIMIT, extensionProperties, Integer.class);
+    }
     return attributeCountLimit;
   }
 
-  @JsonProperty("attribute_count_limit")
+  @JsonProperty(ATTRIBUTE_COUNT_LIMIT)
   public LogRecordLimitsModel withAttributeCountLimit(Integer attributeCountLimit) {
     this.attributeCountLimit = attributeCountLimit;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public LogRecordLimitsModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "LogRecordLimitsModel{"
@@ -64,6 +113,8 @@ public String toString() {
         + attributeValueLengthLimit
         + ", attributeCountLimit="
         + attributeCountLimit
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -74,6 +125,8 @@ public int hashCode() {
     h ^= (this.attributeValueLengthLimit == null) ? 0 : this.attributeValueLengthLimit.hashCode();
     h *= 1000003;
     h ^= (this.attributeCountLimit == null) ? 0 : this.attributeCountLimit.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -89,7 +142,10 @@ public boolean equals(@Nullable Object o) {
               : this.attributeValueLengthLimit.equals(that.attributeValueLengthLimit))
           && (this.attributeCountLimit == null
               ? that.attributeCountLimit == null
-              : this.attributeCountLimit.equals(that.attributeCountLimit));
+              : this.attributeCountLimit.equals(that.attributeCountLimit))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordProcessorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordProcessorModel.java
index f20ebdd30f2..1f3bc89ba8d 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordProcessorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordProcessorModel.java
@@ -5,44 +5,60 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordProcessorModel.BATCH;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordProcessorModel.SIMPLE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.LogRecordProcessorModelAccessor.EXPERIMENTAL_PROPERTIES;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalEventToSpanEventBridgeLogRecordProcessorModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"batch", "simple", "event_to_span_event_bridge/development"})
+@JsonPropertyOrder({BATCH, SIMPLE})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class LogRecordProcessorModel {
 
-  @Nullable private BatchLogRecordProcessorModel batch;
-  @Nullable private SimpleLogRecordProcessorModel simple;
+  static final String BATCH = "batch";
+  static final String SIMPLE = "simple";
 
-  @Nullable
-  private ExperimentalEventToSpanEventBridgeLogRecordProcessorModel
-      eventToSpanEventBridgeDevelopment;
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(BATCH, BatchLogRecordProcessorModel.class);
+    STABLE_PROPERTIES.put(SIMPLE, SimpleLogRecordProcessorModel.class);
+  }
 
-  private Map<String, LogRecordProcessorPropertyModel> additionalProperties =
-      new LinkedHashMap<String, LogRecordProcessorPropertyModel>();
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
+  @Nullable private BatchLogRecordProcessorModel batch;
+  @Nullable private SimpleLogRecordProcessorModel simple;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure a batch log record processor.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("batch")
+  @JsonProperty(BATCH)
   @Nullable
   public BatchLogRecordProcessorModel getBatch() {
+    if (batch == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          BATCH, extensionProperties, BatchLogRecordProcessorModel.class);
+    }
     return batch;
   }
 
-  @JsonProperty("batch")
+  @JsonProperty(BATCH)
   public LogRecordProcessorModel withBatch(BatchLogRecordProcessorModel batch) {
     this.batch = batch;
     return this;
@@ -53,46 +69,36 @@ public LogRecordProcessorModel withBatch(BatchLogRecordProcessorModel batch) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("simple")
+  @JsonProperty(SIMPLE)
   @Nullable
   public SimpleLogRecordProcessorModel getSimple() {
+    if (simple == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          SIMPLE, extensionProperties, SimpleLogRecordProcessorModel.class);
+    }
     return simple;
   }
 
-  @JsonProperty("simple")
+  @JsonProperty(SIMPLE)
   public LogRecordProcessorModel withSimple(SimpleLogRecordProcessorModel simple) {
     this.simple = simple;
     return this;
   }
 
-  /**
-   * Configure an event to span event bridge log record processor.
-   *
-   * <p>If omitted, ignore.
-   */
-  @JsonProperty("event_to_span_event_bridge/development")
-  @Nullable
-  public ExperimentalEventToSpanEventBridgeLogRecordProcessorModel
-      getEventToSpanEventBridgeDevelopment() {
-    return eventToSpanEventBridgeDevelopment;
-  }
-
-  @JsonProperty("event_to_span_event_bridge/development")
-  public LogRecordProcessorModel withEventToSpanEventBridgeDevelopment(
-      ExperimentalEventToSpanEventBridgeLogRecordProcessorModel eventToSpanEventBridgeDevelopment) {
-    this.eventToSpanEventBridgeDevelopment = eventToSpanEventBridgeDevelopment;
-    return this;
-  }
-
   @JsonAnyGetter
-  public Map<String, LogRecordProcessorPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public LogRecordProcessorModel withAdditionalProperty(
-      String name, LogRecordProcessorPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public LogRecordProcessorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -103,10 +109,8 @@ public String toString() {
         + batch
         + ", simple="
         + simple
-        + ", eventToSpanEventBridgeDevelopment="
-        + eventToSpanEventBridgeDevelopment
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -118,12 +122,7 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.simple == null) ? 0 : this.simple.hashCode();
     h *= 1000003;
-    h ^=
-        (this.eventToSpanEventBridgeDevelopment == null)
-            ? 0
-            : this.eventToSpanEventBridgeDevelopment.hashCode();
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -136,13 +135,9 @@ public boolean equals(@Nullable Object o) {
       LogRecordProcessorModel that = (LogRecordProcessorModel) o;
       return (this.batch == null ? that.batch == null : this.batch.equals(that.batch))
           && (this.simple == null ? that.simple == null : this.simple.equals(that.simple))
-          && (this.eventToSpanEventBridgeDevelopment == null
-              ? that.eventToSpanEventBridgeDevelopment == null
-              : this.eventToSpanEventBridgeDevelopment.equals(
-                  that.eventToSpanEventBridgeDevelopment))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordProcessorPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordProcessorPropertyModel.java
deleted file mode 100644
index 5ebf23bc184..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LogRecordProcessorPropertyModel.java
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class LogRecordProcessorPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public LogRecordProcessorPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "LogRecordProcessorPropertyModel{"
-        + "additionalProperties="
-        + additionalProperties
-        + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof LogRecordProcessorPropertyModel) {
-      LogRecordProcessorPropertyModel that = (LogRecordProcessorPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LoggerProviderModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LoggerProviderModel.java
index ae5a722a1fe..22212329d0d 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LoggerProviderModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/LoggerProviderModel.java
@@ -5,35 +5,56 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LoggerProviderModel.LIMITS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LoggerProviderModel.PROCESSORS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.LoggerProviderModelAccessor.EXPERIMENTAL_PROPERTIES;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalLoggerConfiguratorModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"processors", "limits", "logger_configurator/development"})
+@JsonPropertyOrder({PROCESSORS, LIMITS})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class LoggerProviderModel {
 
+  static final String PROCESSORS = "processors";
+  static final String LIMITS = "limits";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(LIMITS, LogRecordLimitsModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private List<LogRecordProcessorModel> processors;
   @Nullable private LogRecordLimitsModel limits;
-  @Nullable private ExperimentalLoggerConfiguratorModel loggerConfiguratorDevelopment;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure log record processors.
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("processors")
+  @JsonProperty(PROCESSORS)
   @Nullable
   public List<LogRecordProcessorModel> getProcessors() {
     return processors;
   }
 
-  @JsonProperty("processors")
+  @JsonProperty(PROCESSORS)
   public LoggerProviderModel withProcessors(List<LogRecordProcessorModel> processors) {
     this.processors = processors;
     return this;
@@ -44,33 +65,36 @@ public LoggerProviderModel withProcessors(List<LogRecordProcessorModel> processo
    *
    * <p>If omitted, default values as described in LogRecordLimits are used.
    */
-  @JsonProperty("limits")
+  @JsonProperty(LIMITS)
   @Nullable
   public LogRecordLimitsModel getLimits() {
+    if (limits == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          LIMITS, extensionProperties, LogRecordLimitsModel.class);
+    }
     return limits;
   }
 
-  @JsonProperty("limits")
+  @JsonProperty(LIMITS)
   public LoggerProviderModel withLimits(LogRecordLimitsModel limits) {
     this.limits = limits;
     return this;
   }
 
-  /**
-   * Configure loggers.
-   *
-   * <p>If omitted, all loggers use default values as described in ExperimentalLoggerConfig.
-   */
-  @JsonProperty("logger_configurator/development")
-  @Nullable
-  public ExperimentalLoggerConfiguratorModel getLoggerConfiguratorDevelopment() {
-    return loggerConfiguratorDevelopment;
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
-  @JsonProperty("logger_configurator/development")
-  public LoggerProviderModel withLoggerConfiguratorDevelopment(
-      ExperimentalLoggerConfiguratorModel loggerConfiguratorDevelopment) {
-    this.loggerConfiguratorDevelopment = loggerConfiguratorDevelopment;
+  @JsonAnySetter
+  public LoggerProviderModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -81,8 +105,8 @@ public String toString() {
         + processors
         + ", limits="
         + limits
-        + ", loggerConfiguratorDevelopment="
-        + loggerConfiguratorDevelopment
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -94,10 +118,7 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.limits == null) ? 0 : this.limits.hashCode();
     h *= 1000003;
-    h ^=
-        (this.loggerConfiguratorDevelopment == null)
-            ? 0
-            : this.loggerConfiguratorDevelopment.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -112,9 +133,9 @@ public boolean equals(@Nullable Object o) {
               ? that.processors == null
               : this.processors.equals(that.processors))
           && (this.limits == null ? that.limits == null : this.limits.equals(that.limits))
-          && (this.loggerConfiguratorDevelopment == null
-              ? that.loggerConfiguratorDevelopment == null
-              : this.loggerConfiguratorDevelopment.equals(that.loggerConfiguratorDevelopment));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MeterProviderModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MeterProviderModel.java
index 0bb90d10df6..8cc2e784413 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MeterProviderModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MeterProviderModel.java
@@ -5,36 +5,59 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.MeterProviderModel.EXEMPLAR_FILTER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.MeterProviderModel.READERS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.MeterProviderModel.VIEWS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.MeterProviderModelAccessor.EXPERIMENTAL_PROPERTIES;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalMeterConfiguratorModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"readers", "views", "exemplar_filter", "meter_configurator/development"})
+@JsonPropertyOrder({READERS, VIEWS, EXEMPLAR_FILTER})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class MeterProviderModel {
 
+  static final String READERS = "readers";
+  static final String VIEWS = "views";
+  static final String EXEMPLAR_FILTER = "exemplar_filter";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(EXEMPLAR_FILTER, ExemplarFilterModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private List<MetricReaderModel> readers;
   @Nullable private List<ViewModel> views;
   @Nullable private ExemplarFilterModel exemplarFilter;
-  @Nullable private ExperimentalMeterConfiguratorModel meterConfiguratorDevelopment;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure metric readers.
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("readers")
+  @JsonProperty(READERS)
   @Nullable
   public List<MetricReaderModel> getReaders() {
     return readers;
   }
 
-  @JsonProperty("readers")
+  @JsonProperty(READERS)
   public MeterProviderModel withReaders(List<MetricReaderModel> readers) {
     this.readers = readers;
     return this;
@@ -48,13 +71,13 @@ public MeterProviderModel withReaders(List<MetricReaderModel> readers) {
    *
    * <p>If omitted, no views are registered.
    */
-  @JsonProperty("views")
+  @JsonProperty(VIEWS)
   @Nullable
   public List<ViewModel> getViews() {
     return views;
   }
 
-  @JsonProperty("views")
+  @JsonProperty(VIEWS)
   public MeterProviderModel withViews(List<ViewModel> views) {
     this.views = views;
     return this;
@@ -74,33 +97,36 @@ public MeterProviderModel withViews(List<ViewModel> views) {
    *
    * <p>If omitted, trace_based is used.
    */
-  @JsonProperty("exemplar_filter")
+  @JsonProperty(EXEMPLAR_FILTER)
   @Nullable
   public ExemplarFilterModel getExemplarFilter() {
+    if (exemplarFilter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EXEMPLAR_FILTER, extensionProperties, ExemplarFilterModel.class);
+    }
     return exemplarFilter;
   }
 
-  @JsonProperty("exemplar_filter")
+  @JsonProperty(EXEMPLAR_FILTER)
   public MeterProviderModel withExemplarFilter(ExemplarFilterModel exemplarFilter) {
     this.exemplarFilter = exemplarFilter;
     return this;
   }
 
-  /**
-   * Configure meters.
-   *
-   * <p>If omitted, all meters use default values as described in ExperimentalMeterConfig.
-   */
-  @JsonProperty("meter_configurator/development")
-  @Nullable
-  public ExperimentalMeterConfiguratorModel getMeterConfiguratorDevelopment() {
-    return meterConfiguratorDevelopment;
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
-  @JsonProperty("meter_configurator/development")
-  public MeterProviderModel withMeterConfiguratorDevelopment(
-      ExperimentalMeterConfiguratorModel meterConfiguratorDevelopment) {
-    this.meterConfiguratorDevelopment = meterConfiguratorDevelopment;
+  @JsonAnySetter
+  public MeterProviderModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -113,8 +139,8 @@ public String toString() {
         + views
         + ", exemplarFilter="
         + exemplarFilter
-        + ", meterConfiguratorDevelopment="
-        + meterConfiguratorDevelopment
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -128,10 +154,7 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.exemplarFilter == null) ? 0 : this.exemplarFilter.hashCode();
     h *= 1000003;
-    h ^=
-        (this.meterConfiguratorDevelopment == null)
-            ? 0
-            : this.meterConfiguratorDevelopment.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -147,9 +170,9 @@ public boolean equals(@Nullable Object o) {
           && (this.exemplarFilter == null
               ? that.exemplarFilter == null
               : this.exemplarFilter.equals(that.exemplarFilter))
-          && (this.meterConfiguratorDevelopment == null
-              ? that.meterConfiguratorDevelopment == null
-              : this.meterConfiguratorDevelopment.equals(that.meterConfiguratorDevelopment));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricProducerModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricProducerModel.java
index ca6109b59b1..1c80bc704c5 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricProducerModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricProducerModel.java
@@ -5,51 +5,75 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.MetricProducerModel.OPENCENSUS;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"opencensus"})
+@JsonPropertyOrder({OPENCENSUS})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class MetricProducerModel {
 
+  static final String OPENCENSUS = "opencensus";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(OPENCENSUS, OpenCensusMetricProducerModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
   @Nullable private OpenCensusMetricProducerModel opencensus;
-  private Map<String, MetricProducerPropertyModel> additionalProperties =
-      new LinkedHashMap<String, MetricProducerPropertyModel>();
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure metric producer to be opencensus.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("opencensus")
+  @JsonProperty(OPENCENSUS)
   @Nullable
   public OpenCensusMetricProducerModel getOpencensus() {
+    if (opencensus == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OPENCENSUS, extensionProperties, OpenCensusMetricProducerModel.class);
+    }
     return opencensus;
   }
 
-  @JsonProperty("opencensus")
+  @JsonProperty(OPENCENSUS)
   public MetricProducerModel withOpencensus(OpenCensusMetricProducerModel opencensus) {
     this.opencensus = opencensus;
     return this;
   }
 
   @JsonAnyGetter
-  public Map<String, MetricProducerPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public MetricProducerModel withAdditionalProperty(
-      String name, MetricProducerPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public MetricProducerModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -58,8 +82,8 @@ public String toString() {
     return "MetricProducerModel{"
         + "opencensus="
         + opencensus
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -69,7 +93,7 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.opencensus == null) ? 0 : this.opencensus.hashCode();
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -83,9 +107,9 @@ public boolean equals(@Nullable Object o) {
       return (this.opencensus == null
               ? that.opencensus == null
               : this.opencensus.equals(that.opencensus))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricProducerPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricProducerPropertyModel.java
deleted file mode 100644
index 0155f409308..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricProducerPropertyModel.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class MetricProducerPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public MetricProducerPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "MetricProducerPropertyModel{" + "additionalProperties=" + additionalProperties + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof MetricProducerPropertyModel) {
-      MetricProducerPropertyModel that = (MetricProducerPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricReaderModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricReaderModel.java
index 8ff3ab90743..18ce4d78b4c 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricReaderModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/MetricReaderModel.java
@@ -5,32 +5,60 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.MetricReaderModel.PERIODIC;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.MetricReaderModel.PULL;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"periodic", "pull"})
+@JsonPropertyOrder({PERIODIC, PULL})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class MetricReaderModel {
 
+  static final String PERIODIC = "periodic";
+  static final String PULL = "pull";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(PERIODIC, PeriodicMetricReaderModel.class);
+    STABLE_PROPERTIES.put(PULL, PullMetricReaderModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private PeriodicMetricReaderModel periodic;
   @Nullable private PullMetricReaderModel pull;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure a periodic metric reader.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("periodic")
+  @JsonProperty(PERIODIC)
   @Nullable
   public PeriodicMetricReaderModel getPeriodic() {
+    if (periodic == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          PERIODIC, extensionProperties, PeriodicMetricReaderModel.class);
+    }
     return periodic;
   }
 
-  @JsonProperty("periodic")
+  @JsonProperty(PERIODIC)
   public MetricReaderModel withPeriodic(PeriodicMetricReaderModel periodic) {
     this.periodic = periodic;
     return this;
@@ -41,21 +69,49 @@ public MetricReaderModel withPeriodic(PeriodicMetricReaderModel periodic) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("pull")
+  @JsonProperty(PULL)
   @Nullable
   public PullMetricReaderModel getPull() {
+    if (pull == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          PULL, extensionProperties, PullMetricReaderModel.class);
+    }
     return pull;
   }
 
-  @JsonProperty("pull")
+  @JsonProperty(PULL)
   public MetricReaderModel withPull(PullMetricReaderModel pull) {
     this.pull = pull;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public MetricReaderModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
-    return "MetricReaderModel{" + "periodic=" + periodic + ", pull=" + pull + "}";
+    return "MetricReaderModel{"
+        + "periodic="
+        + periodic
+        + ", pull="
+        + pull
+        + ", extensionProperties="
+        + extensionProperties
+        + "}";
   }
 
   @Override
@@ -65,6 +121,8 @@ public int hashCode() {
     h ^= (this.periodic == null) ? 0 : this.periodic.hashCode();
     h *= 1000003;
     h ^= (this.pull == null) ? 0 : this.pull.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -76,7 +134,10 @@ public boolean equals(@Nullable Object o) {
     if (o instanceof MetricReaderModel) {
       MetricReaderModel that = (MetricReaderModel) o;
       return (this.periodic == null ? that.periodic == null : this.periodic.equals(that.periodic))
-          && (this.pull == null ? that.pull == null : this.pull.equals(that.pull));
+          && (this.pull == null ? that.pull == null : this.pull.equals(that.pull))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/NameStringValuePairModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/NameStringValuePairModel.java
index 87c62310810..7158d6e375b 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/NameStringValuePairModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/NameStringValuePairModel.java
@@ -5,32 +5,59 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.NameStringValuePairModel.NAME;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.NameStringValuePairModel.VALUE;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"name", "value"})
+@JsonPropertyOrder({NAME, VALUE})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class NameStringValuePairModel {
 
+  static final String NAME = "name";
+  static final String VALUE = "value";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(NAME, String.class);
+    STABLE_PROPERTIES.put(VALUE, String.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String name;
   @Nullable private String value;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * The name of the pair.
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("name")
+  @JsonProperty(NAME)
   @Nullable
   public String getName() {
+    if (name == null) {
+      return ExtensionPropertyUtil.getGraduated(NAME, extensionProperties, String.class);
+    }
     return name;
   }
 
-  @JsonProperty("name")
+  @JsonProperty(NAME)
   public NameStringValuePairModel withName(String name) {
     this.name = name;
     return this;
@@ -41,21 +68,48 @@ public NameStringValuePairModel withName(String name) {
    *
    * <p>Property must be present, but if null the behavior is dependent on usage context.
    */
-  @JsonProperty("value")
+  @JsonProperty(VALUE)
   @Nullable
   public String getValue() {
+    if (value == null) {
+      return ExtensionPropertyUtil.getGraduated(VALUE, extensionProperties, String.class);
+    }
     return value;
   }
 
-  @JsonProperty("value")
+  @JsonProperty(VALUE)
   public NameStringValuePairModel withValue(String value) {
     this.value = value;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public NameStringValuePairModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
-    return "NameStringValuePairModel{" + "name=" + name + ", value=" + value + "}";
+    return "NameStringValuePairModel{"
+        + "name="
+        + name
+        + ", value="
+        + value
+        + ", extensionProperties="
+        + extensionProperties
+        + "}";
   }
 
   @Override
@@ -65,6 +119,8 @@ public int hashCode() {
     h ^= (this.name == null) ? 0 : this.name.hashCode();
     h *= 1000003;
     h ^= (this.value == null) ? 0 : this.value.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -76,7 +132,10 @@ public boolean equals(@Nullable Object o) {
     if (o instanceof NameStringValuePairModel) {
       NameStringValuePairModel that = (NameStringValuePairModel) o;
       return (this.name == null ? that.name == null : this.name.equals(that.name))
-          && (this.value == null ? that.value == null : this.value.equals(that.value));
+          && (this.value == null ? that.value == null : this.value.equals(that.value))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OpenTelemetryConfigurationModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OpenTelemetryConfigurationModel.java
index 1e73faf5968..8e1bff18318 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OpenTelemetryConfigurationModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OpenTelemetryConfigurationModel.java
@@ -5,12 +5,25 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.ATTRIBUTE_LIMITS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.DISABLED;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.DISTRIBUTION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.FILE_FORMAT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.LOGGER_PROVIDER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.LOG_LEVEL;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.METER_PROVIDER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.PROPAGATOR;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.RESOURCE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel.TRACER_PROVIDER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.OpenTelemetryConfigurationModelAccessor.EXPERIMENTAL_PROPERTIES;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalInstrumentationModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
@@ -18,21 +31,49 @@
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "file_format",
-  "disabled",
-  "log_level",
-  "attribute_limits",
-  "logger_provider",
-  "meter_provider",
-  "propagator",
-  "tracer_provider",
-  "resource",
-  "instrumentation/development",
-  "distribution"
+  FILE_FORMAT,
+  DISABLED,
+  LOG_LEVEL,
+  ATTRIBUTE_LIMITS,
+  LOGGER_PROVIDER,
+  METER_PROVIDER,
+  PROPAGATOR,
+  TRACER_PROVIDER,
+  RESOURCE,
+  DISTRIBUTION
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class OpenTelemetryConfigurationModel {
 
+  static final String FILE_FORMAT = "file_format";
+  static final String DISABLED = "disabled";
+  static final String LOG_LEVEL = "log_level";
+  static final String ATTRIBUTE_LIMITS = "attribute_limits";
+  static final String LOGGER_PROVIDER = "logger_provider";
+  static final String METER_PROVIDER = "meter_provider";
+  static final String PROPAGATOR = "propagator";
+  static final String TRACER_PROVIDER = "tracer_provider";
+  static final String RESOURCE = "resource";
+  static final String DISTRIBUTION = "distribution";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(FILE_FORMAT, String.class);
+    STABLE_PROPERTIES.put(DISABLED, Boolean.class);
+    STABLE_PROPERTIES.put(LOG_LEVEL, SeverityNumberModel.class);
+    STABLE_PROPERTIES.put(ATTRIBUTE_LIMITS, AttributeLimitsModel.class);
+    STABLE_PROPERTIES.put(LOGGER_PROVIDER, LoggerProviderModel.class);
+    STABLE_PROPERTIES.put(METER_PROVIDER, MeterProviderModel.class);
+    STABLE_PROPERTIES.put(PROPAGATOR, PropagatorModel.class);
+    STABLE_PROPERTIES.put(TRACER_PROVIDER, TracerProviderModel.class);
+    STABLE_PROPERTIES.put(RESOURCE, ResourceModel.class);
+    STABLE_PROPERTIES.put(DISTRIBUTION, DistributionModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
   @Nullable private String fileFormat;
   @Nullable private Boolean disabled;
   @Nullable private SeverityNumberModel logLevel;
@@ -42,9 +83,8 @@ public class OpenTelemetryConfigurationModel {
   @Nullable private PropagatorModel propagator;
   @Nullable private TracerProviderModel tracerProvider;
   @Nullable private ResourceModel resource;
-  @Nullable private ExperimentalInstrumentationModel instrumentationDevelopment;
   @Nullable private DistributionModel distribution;
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * The file format version.
@@ -60,13 +100,16 @@ public class OpenTelemetryConfigurationModel {
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("file_format")
+  @JsonProperty(FILE_FORMAT)
   @Nullable
   public String getFileFormat() {
+    if (fileFormat == null) {
+      return ExtensionPropertyUtil.getGraduated(FILE_FORMAT, extensionProperties, String.class);
+    }
     return fileFormat;
   }
 
-  @JsonProperty("file_format")
+  @JsonProperty(FILE_FORMAT)
   public OpenTelemetryConfigurationModel withFileFormat(String fileFormat) {
     this.fileFormat = fileFormat;
     return this;
@@ -77,13 +120,16 @@ public OpenTelemetryConfigurationModel withFileFormat(String fileFormat) {
    *
    * <p>If omitted or null, false is used.
    */
-  @JsonProperty("disabled")
+  @JsonProperty(DISABLED)
   @Nullable
   public Boolean getDisabled() {
+    if (disabled == null) {
+      return ExtensionPropertyUtil.getGraduated(DISABLED, extensionProperties, Boolean.class);
+    }
     return disabled;
   }
 
-  @JsonProperty("disabled")
+  @JsonProperty(DISABLED)
   public OpenTelemetryConfigurationModel withDisabled(Boolean disabled) {
     this.disabled = disabled;
     return this;
@@ -144,13 +190,17 @@ public OpenTelemetryConfigurationModel withDisabled(Boolean disabled) {
    *
    * <p>If omitted, INFO is used.
    */
-  @JsonProperty("log_level")
+  @JsonProperty(LOG_LEVEL)
   @Nullable
   public SeverityNumberModel getLogLevel() {
+    if (logLevel == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          LOG_LEVEL, extensionProperties, SeverityNumberModel.class);
+    }
     return logLevel;
   }
 
-  @JsonProperty("log_level")
+  @JsonProperty(LOG_LEVEL)
   public OpenTelemetryConfigurationModel withLogLevel(SeverityNumberModel logLevel) {
     this.logLevel = logLevel;
     return this;
@@ -161,13 +211,17 @@ public OpenTelemetryConfigurationModel withLogLevel(SeverityNumberModel logLevel
    *
    * <p>If omitted, default values as described in AttributeLimits are used.
    */
-  @JsonProperty("attribute_limits")
+  @JsonProperty(ATTRIBUTE_LIMITS)
   @Nullable
   public AttributeLimitsModel getAttributeLimits() {
+    if (attributeLimits == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ATTRIBUTE_LIMITS, extensionProperties, AttributeLimitsModel.class);
+    }
     return attributeLimits;
   }
 
-  @JsonProperty("attribute_limits")
+  @JsonProperty(ATTRIBUTE_LIMITS)
   public OpenTelemetryConfigurationModel withAttributeLimits(AttributeLimitsModel attributeLimits) {
     this.attributeLimits = attributeLimits;
     return this;
@@ -178,13 +232,17 @@ public OpenTelemetryConfigurationModel withAttributeLimits(AttributeLimitsModel
    *
    * <p>If omitted, a noop logger provider is used.
    */
-  @JsonProperty("logger_provider")
+  @JsonProperty(LOGGER_PROVIDER)
   @Nullable
   public LoggerProviderModel getLoggerProvider() {
+    if (loggerProvider == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          LOGGER_PROVIDER, extensionProperties, LoggerProviderModel.class);
+    }
     return loggerProvider;
   }
 
-  @JsonProperty("logger_provider")
+  @JsonProperty(LOGGER_PROVIDER)
   public OpenTelemetryConfigurationModel withLoggerProvider(LoggerProviderModel loggerProvider) {
     this.loggerProvider = loggerProvider;
     return this;
@@ -195,13 +253,17 @@ public OpenTelemetryConfigurationModel withLoggerProvider(LoggerProviderModel lo
    *
    * <p>If omitted, a noop meter provider is used.
    */
-  @JsonProperty("meter_provider")
+  @JsonProperty(METER_PROVIDER)
   @Nullable
   public MeterProviderModel getMeterProvider() {
+    if (meterProvider == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          METER_PROVIDER, extensionProperties, MeterProviderModel.class);
+    }
     return meterProvider;
   }
 
-  @JsonProperty("meter_provider")
+  @JsonProperty(METER_PROVIDER)
   public OpenTelemetryConfigurationModel withMeterProvider(MeterProviderModel meterProvider) {
     this.meterProvider = meterProvider;
     return this;
@@ -212,13 +274,17 @@ public OpenTelemetryConfigurationModel withMeterProvider(MeterProviderModel mete
    *
    * <p>If omitted, a noop propagator is used.
    */
-  @JsonProperty("propagator")
+  @JsonProperty(PROPAGATOR)
   @Nullable
   public PropagatorModel getPropagator() {
+    if (propagator == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          PROPAGATOR, extensionProperties, PropagatorModel.class);
+    }
     return propagator;
   }
 
-  @JsonProperty("propagator")
+  @JsonProperty(PROPAGATOR)
   public OpenTelemetryConfigurationModel withPropagator(PropagatorModel propagator) {
     this.propagator = propagator;
     return this;
@@ -229,13 +295,17 @@ public OpenTelemetryConfigurationModel withPropagator(PropagatorModel propagator
    *
    * <p>If omitted, a noop tracer provider is used.
    */
-  @JsonProperty("tracer_provider")
+  @JsonProperty(TRACER_PROVIDER)
   @Nullable
   public TracerProviderModel getTracerProvider() {
+    if (tracerProvider == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          TRACER_PROVIDER, extensionProperties, TracerProviderModel.class);
+    }
     return tracerProvider;
   }
 
-  @JsonProperty("tracer_provider")
+  @JsonProperty(TRACER_PROVIDER)
   public OpenTelemetryConfigurationModel withTracerProvider(TracerProviderModel tracerProvider) {
     this.tracerProvider = tracerProvider;
     return this;
@@ -246,36 +316,21 @@ public OpenTelemetryConfigurationModel withTracerProvider(TracerProviderModel tr
    *
    * <p>If omitted, the default resource is used.
    */
-  @JsonProperty("resource")
+  @JsonProperty(RESOURCE)
   @Nullable
   public ResourceModel getResource() {
+    if (resource == null) {
+      return ExtensionPropertyUtil.getGraduated(RESOURCE, extensionProperties, ResourceModel.class);
+    }
     return resource;
   }
 
-  @JsonProperty("resource")
+  @JsonProperty(RESOURCE)
   public OpenTelemetryConfigurationModel withResource(ResourceModel resource) {
     this.resource = resource;
     return this;
   }
 
-  /**
-   * Configure instrumentation.
-   *
-   * <p>If omitted, instrumentation defaults are used.
-   */
-  @JsonProperty("instrumentation/development")
-  @Nullable
-  public ExperimentalInstrumentationModel getInstrumentationDevelopment() {
-    return instrumentationDevelopment;
-  }
-
-  @JsonProperty("instrumentation/development")
-  public OpenTelemetryConfigurationModel withInstrumentationDevelopment(
-      ExperimentalInstrumentationModel instrumentationDevelopment) {
-    this.instrumentationDevelopment = instrumentationDevelopment;
-    return this;
-  }
-
   /**
    * Defines configuration parameters specific to a particular OpenTelemetry distribution or vendor.
    *
@@ -287,26 +342,37 @@ public OpenTelemetryConfigurationModel withInstrumentationDevelopment(
    *
    * <p>If omitted, distribution defaults are used.
    */
-  @JsonProperty("distribution")
+  @JsonProperty(DISTRIBUTION)
   @Nullable
   public DistributionModel getDistribution() {
+    if (distribution == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          DISTRIBUTION, extensionProperties, DistributionModel.class);
+    }
     return distribution;
   }
 
-  @JsonProperty("distribution")
+  @JsonProperty(DISTRIBUTION)
   public OpenTelemetryConfigurationModel withDistribution(DistributionModel distribution) {
     this.distribution = distribution;
     return this;
   }
 
   @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public OpenTelemetryConfigurationModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
+  public OpenTelemetryConfigurationModel withExtensionProperty(
+      String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -331,12 +397,10 @@ public String toString() {
         + tracerProvider
         + ", resource="
         + resource
-        + ", instrumentationDevelopment="
-        + instrumentationDevelopment
         + ", distribution="
         + distribution
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -362,11 +426,9 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.resource == null) ? 0 : this.resource.hashCode();
     h *= 1000003;
-    h ^= (this.instrumentationDevelopment == null) ? 0 : this.instrumentationDevelopment.hashCode();
-    h *= 1000003;
     h ^= (this.distribution == null) ? 0 : this.distribution.hashCode();
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -398,15 +460,12 @@ public boolean equals(@Nullable Object o) {
               ? that.tracerProvider == null
               : this.tracerProvider.equals(that.tracerProvider))
           && (this.resource == null ? that.resource == null : this.resource.equals(that.resource))
-          && (this.instrumentationDevelopment == null
-              ? that.instrumentationDevelopment == null
-              : this.instrumentationDevelopment.equals(that.instrumentationDevelopment))
           && (this.distribution == null
               ? that.distribution == null
               : this.distribution.equals(that.distribution))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpGrpcExporterModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpGrpcExporterModel.java
index fd9dce77176..a833c6e5de5 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpGrpcExporterModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpGrpcExporterModel.java
@@ -5,37 +5,75 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcExporterModel.COMPRESSION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcExporterModel.ENDPOINT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcExporterModel.HEADERS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcExporterModel.HEADERS_LIST;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcExporterModel.TIMEOUT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcExporterModel.TLS;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"endpoint", "tls", "headers", "headers_list", "compression", "timeout"})
+@JsonPropertyOrder({ENDPOINT, TLS, HEADERS, HEADERS_LIST, COMPRESSION, TIMEOUT})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class OtlpGrpcExporterModel {
 
+  static final String ENDPOINT = "endpoint";
+  static final String TLS = "tls";
+  static final String HEADERS = "headers";
+  static final String HEADERS_LIST = "headers_list";
+  static final String COMPRESSION = "compression";
+  static final String TIMEOUT = "timeout";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(ENDPOINT, String.class);
+    STABLE_PROPERTIES.put(TLS, GrpcTlsModel.class);
+    STABLE_PROPERTIES.put(HEADERS_LIST, String.class);
+    STABLE_PROPERTIES.put(COMPRESSION, String.class);
+    STABLE_PROPERTIES.put(TIMEOUT, Integer.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String endpoint;
   @Nullable private GrpcTlsModel tls;
   @Nullable private List<NameStringValuePairModel> headers;
   @Nullable private String headersList;
   @Nullable private String compression;
   @Nullable private Integer timeout;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure endpoint.
    *
    * <p>If omitted or null, http://localhost:4317 is used.
    */
-  @JsonProperty("endpoint")
+  @JsonProperty(ENDPOINT)
   @Nullable
   public String getEndpoint() {
+    if (endpoint == null) {
+      return ExtensionPropertyUtil.getGraduated(ENDPOINT, extensionProperties, String.class);
+    }
     return endpoint;
   }
 
-  @JsonProperty("endpoint")
+  @JsonProperty(ENDPOINT)
   public OtlpGrpcExporterModel withEndpoint(String endpoint) {
     this.endpoint = endpoint;
     return this;
@@ -46,13 +84,16 @@ public OtlpGrpcExporterModel withEndpoint(String endpoint) {
    *
    * <p>If omitted, system default TLS settings are used.
    */
-  @JsonProperty("tls")
+  @JsonProperty(TLS)
   @Nullable
   public GrpcTlsModel getTls() {
+    if (tls == null) {
+      return ExtensionPropertyUtil.getGraduated(TLS, extensionProperties, GrpcTlsModel.class);
+    }
     return tls;
   }
 
-  @JsonProperty("tls")
+  @JsonProperty(TLS)
   public OtlpGrpcExporterModel withTls(GrpcTlsModel tls) {
     this.tls = tls;
     return this;
@@ -65,13 +106,13 @@ public OtlpGrpcExporterModel withTls(GrpcTlsModel tls) {
    *
    * <p>If omitted, no headers are added.
    */
-  @JsonProperty("headers")
+  @JsonProperty(HEADERS)
   @Nullable
   public List<NameStringValuePairModel> getHeaders() {
     return headers;
   }
 
-  @JsonProperty("headers")
+  @JsonProperty(HEADERS)
   public OtlpGrpcExporterModel withHeaders(List<NameStringValuePairModel> headers) {
     this.headers = headers;
     return this;
@@ -87,13 +128,16 @@ public OtlpGrpcExporterModel withHeaders(List<NameStringValuePairModel> headers)
    *
    * <p>If omitted or null, no headers are added.
    */
-  @JsonProperty("headers_list")
+  @JsonProperty(HEADERS_LIST)
   @Nullable
   public String getHeadersList() {
+    if (headersList == null) {
+      return ExtensionPropertyUtil.getGraduated(HEADERS_LIST, extensionProperties, String.class);
+    }
     return headersList;
   }
 
-  @JsonProperty("headers_list")
+  @JsonProperty(HEADERS_LIST)
   public OtlpGrpcExporterModel withHeadersList(String headersList) {
     this.headersList = headersList;
     return this;
@@ -106,13 +150,16 @@ public OtlpGrpcExporterModel withHeadersList(String headersList) {
    *
    * <p>If omitted or null, none is used.
    */
-  @JsonProperty("compression")
+  @JsonProperty(COMPRESSION)
   @Nullable
   public String getCompression() {
+    if (compression == null) {
+      return ExtensionPropertyUtil.getGraduated(COMPRESSION, extensionProperties, String.class);
+    }
     return compression;
   }
 
-  @JsonProperty("compression")
+  @JsonProperty(COMPRESSION)
   public OtlpGrpcExporterModel withCompression(String compression) {
     this.compression = compression;
     return this;
@@ -125,18 +172,38 @@ public OtlpGrpcExporterModel withCompression(String compression) {
    *
    * <p>If omitted or null, 10000 is used.
    */
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   @Nullable
   public Integer getTimeout() {
+    if (timeout == null) {
+      return ExtensionPropertyUtil.getGraduated(TIMEOUT, extensionProperties, Integer.class);
+    }
     return timeout;
   }
 
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   public OtlpGrpcExporterModel withTimeout(Integer timeout) {
     this.timeout = timeout;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public OtlpGrpcExporterModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "OtlpGrpcExporterModel{"
@@ -152,6 +219,8 @@ public String toString() {
         + compression
         + ", timeout="
         + timeout
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -170,6 +239,8 @@ public int hashCode() {
     h ^= (this.compression == null) ? 0 : this.compression.hashCode();
     h *= 1000003;
     h ^= (this.timeout == null) ? 0 : this.timeout.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -189,7 +260,10 @@ public boolean equals(@Nullable Object o) {
           && (this.compression == null
               ? that.compression == null
               : this.compression.equals(that.compression))
-          && (this.timeout == null ? that.timeout == null : this.timeout.equals(that.timeout));
+          && (this.timeout == null ? that.timeout == null : this.timeout.equals(that.timeout))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpGrpcMetricExporterModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpGrpcMetricExporterModel.java
index dadb13fd661..ae11985377f 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpGrpcMetricExporterModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpGrpcMetricExporterModel.java
@@ -5,27 +5,68 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcMetricExporterModel.COMPRESSION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcMetricExporterModel.DEFAULT_HISTOGRAM_AGGREGATION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcMetricExporterModel.ENDPOINT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcMetricExporterModel.HEADERS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcMetricExporterModel.HEADERS_LIST;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcMetricExporterModel.TEMPORALITY_PREFERENCE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcMetricExporterModel.TIMEOUT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcMetricExporterModel.TLS;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "endpoint",
-  "tls",
-  "headers",
-  "headers_list",
-  "compression",
-  "timeout",
-  "temporality_preference",
-  "default_histogram_aggregation"
+  ENDPOINT,
+  TLS,
+  HEADERS,
+  HEADERS_LIST,
+  COMPRESSION,
+  TIMEOUT,
+  TEMPORALITY_PREFERENCE,
+  DEFAULT_HISTOGRAM_AGGREGATION
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class OtlpGrpcMetricExporterModel {
 
+  static final String ENDPOINT = "endpoint";
+  static final String TLS = "tls";
+  static final String HEADERS = "headers";
+  static final String HEADERS_LIST = "headers_list";
+  static final String COMPRESSION = "compression";
+  static final String TIMEOUT = "timeout";
+  static final String TEMPORALITY_PREFERENCE = "temporality_preference";
+  static final String DEFAULT_HISTOGRAM_AGGREGATION = "default_histogram_aggregation";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(ENDPOINT, String.class);
+    STABLE_PROPERTIES.put(TLS, GrpcTlsModel.class);
+    STABLE_PROPERTIES.put(HEADERS_LIST, String.class);
+    STABLE_PROPERTIES.put(COMPRESSION, String.class);
+    STABLE_PROPERTIES.put(TIMEOUT, Integer.class);
+    STABLE_PROPERTIES.put(TEMPORALITY_PREFERENCE, ExporterTemporalityPreferenceModel.class);
+    STABLE_PROPERTIES.put(
+        DEFAULT_HISTOGRAM_AGGREGATION, ExporterDefaultHistogramAggregationModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String endpoint;
   @Nullable private GrpcTlsModel tls;
   @Nullable private List<NameStringValuePairModel> headers;
@@ -34,19 +75,23 @@ public class OtlpGrpcMetricExporterModel {
   @Nullable private Integer timeout;
   @Nullable private ExporterTemporalityPreferenceModel temporalityPreference;
   @Nullable private ExporterDefaultHistogramAggregationModel defaultHistogramAggregation;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure endpoint.
    *
    * <p>If omitted or null, http://localhost:4317 is used.
    */
-  @JsonProperty("endpoint")
+  @JsonProperty(ENDPOINT)
   @Nullable
   public String getEndpoint() {
+    if (endpoint == null) {
+      return ExtensionPropertyUtil.getGraduated(ENDPOINT, extensionProperties, String.class);
+    }
     return endpoint;
   }
 
-  @JsonProperty("endpoint")
+  @JsonProperty(ENDPOINT)
   public OtlpGrpcMetricExporterModel withEndpoint(String endpoint) {
     this.endpoint = endpoint;
     return this;
@@ -57,13 +102,16 @@ public OtlpGrpcMetricExporterModel withEndpoint(String endpoint) {
    *
    * <p>If omitted, system default TLS settings are used.
    */
-  @JsonProperty("tls")
+  @JsonProperty(TLS)
   @Nullable
   public GrpcTlsModel getTls() {
+    if (tls == null) {
+      return ExtensionPropertyUtil.getGraduated(TLS, extensionProperties, GrpcTlsModel.class);
+    }
     return tls;
   }
 
-  @JsonProperty("tls")
+  @JsonProperty(TLS)
   public OtlpGrpcMetricExporterModel withTls(GrpcTlsModel tls) {
     this.tls = tls;
     return this;
@@ -76,13 +124,13 @@ public OtlpGrpcMetricExporterModel withTls(GrpcTlsModel tls) {
    *
    * <p>If omitted, no headers are added.
    */
-  @JsonProperty("headers")
+  @JsonProperty(HEADERS)
   @Nullable
   public List<NameStringValuePairModel> getHeaders() {
     return headers;
   }
 
-  @JsonProperty("headers")
+  @JsonProperty(HEADERS)
   public OtlpGrpcMetricExporterModel withHeaders(List<NameStringValuePairModel> headers) {
     this.headers = headers;
     return this;
@@ -98,13 +146,16 @@ public OtlpGrpcMetricExporterModel withHeaders(List<NameStringValuePairModel> he
    *
    * <p>If omitted or null, no headers are added.
    */
-  @JsonProperty("headers_list")
+  @JsonProperty(HEADERS_LIST)
   @Nullable
   public String getHeadersList() {
+    if (headersList == null) {
+      return ExtensionPropertyUtil.getGraduated(HEADERS_LIST, extensionProperties, String.class);
+    }
     return headersList;
   }
 
-  @JsonProperty("headers_list")
+  @JsonProperty(HEADERS_LIST)
   public OtlpGrpcMetricExporterModel withHeadersList(String headersList) {
     this.headersList = headersList;
     return this;
@@ -117,13 +168,16 @@ public OtlpGrpcMetricExporterModel withHeadersList(String headersList) {
    *
    * <p>If omitted or null, none is used.
    */
-  @JsonProperty("compression")
+  @JsonProperty(COMPRESSION)
   @Nullable
   public String getCompression() {
+    if (compression == null) {
+      return ExtensionPropertyUtil.getGraduated(COMPRESSION, extensionProperties, String.class);
+    }
     return compression;
   }
 
-  @JsonProperty("compression")
+  @JsonProperty(COMPRESSION)
   public OtlpGrpcMetricExporterModel withCompression(String compression) {
     this.compression = compression;
     return this;
@@ -136,13 +190,16 @@ public OtlpGrpcMetricExporterModel withCompression(String compression) {
    *
    * <p>If omitted or null, 10000 is used.
    */
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   @Nullable
   public Integer getTimeout() {
+    if (timeout == null) {
+      return ExtensionPropertyUtil.getGraduated(TIMEOUT, extensionProperties, Integer.class);
+    }
     return timeout;
   }
 
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   public OtlpGrpcMetricExporterModel withTimeout(Integer timeout) {
     this.timeout = timeout;
     return this;
@@ -163,13 +220,17 @@ public OtlpGrpcMetricExporterModel withTimeout(Integer timeout) {
    *
    * <p>If omitted, cumulative is used.
    */
-  @JsonProperty("temporality_preference")
+  @JsonProperty(TEMPORALITY_PREFERENCE)
   @Nullable
   public ExporterTemporalityPreferenceModel getTemporalityPreference() {
+    if (temporalityPreference == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          TEMPORALITY_PREFERENCE, extensionProperties, ExporterTemporalityPreferenceModel.class);
+    }
     return temporalityPreference;
   }
 
-  @JsonProperty("temporality_preference")
+  @JsonProperty(TEMPORALITY_PREFERENCE)
   public OtlpGrpcMetricExporterModel withTemporalityPreference(
       ExporterTemporalityPreferenceModel temporalityPreference) {
     this.temporalityPreference = temporalityPreference;
@@ -189,19 +250,42 @@ public OtlpGrpcMetricExporterModel withTemporalityPreference(
    *
    * <p>If omitted, explicit_bucket_histogram is used.
    */
-  @JsonProperty("default_histogram_aggregation")
+  @JsonProperty(DEFAULT_HISTOGRAM_AGGREGATION)
   @Nullable
   public ExporterDefaultHistogramAggregationModel getDefaultHistogramAggregation() {
+    if (defaultHistogramAggregation == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          DEFAULT_HISTOGRAM_AGGREGATION,
+          extensionProperties,
+          ExporterDefaultHistogramAggregationModel.class);
+    }
     return defaultHistogramAggregation;
   }
 
-  @JsonProperty("default_histogram_aggregation")
+  @JsonProperty(DEFAULT_HISTOGRAM_AGGREGATION)
   public OtlpGrpcMetricExporterModel withDefaultHistogramAggregation(
       ExporterDefaultHistogramAggregationModel defaultHistogramAggregation) {
     this.defaultHistogramAggregation = defaultHistogramAggregation;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public OtlpGrpcMetricExporterModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "OtlpGrpcMetricExporterModel{"
@@ -221,6 +305,8 @@ public String toString() {
         + temporalityPreference
         + ", defaultHistogramAggregation="
         + defaultHistogramAggregation
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -246,6 +332,8 @@ public int hashCode() {
         (this.defaultHistogramAggregation == null)
             ? 0
             : this.defaultHistogramAggregation.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -271,7 +359,10 @@ public boolean equals(@Nullable Object o) {
               : this.temporalityPreference.equals(that.temporalityPreference))
           && (this.defaultHistogramAggregation == null
               ? that.defaultHistogramAggregation == null
-              : this.defaultHistogramAggregation.equals(that.defaultHistogramAggregation));
+              : this.defaultHistogramAggregation.equals(that.defaultHistogramAggregation))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpHttpExporterModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpHttpExporterModel.java
index 4a197e093f4..7d2b0db5e6e 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpHttpExporterModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpHttpExporterModel.java
@@ -5,26 +5,55 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel.COMPRESSION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel.ENCODING;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel.ENDPOINT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel.HEADERS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel.HEADERS_LIST;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel.TIMEOUT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel.TLS;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({
-  "endpoint",
-  "tls",
-  "headers",
-  "headers_list",
-  "compression",
-  "timeout",
-  "encoding"
-})
+@JsonPropertyOrder({ENDPOINT, TLS, HEADERS, HEADERS_LIST, COMPRESSION, TIMEOUT, ENCODING})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class OtlpHttpExporterModel {
 
+  static final String ENDPOINT = "endpoint";
+  static final String TLS = "tls";
+  static final String HEADERS = "headers";
+  static final String HEADERS_LIST = "headers_list";
+  static final String COMPRESSION = "compression";
+  static final String TIMEOUT = "timeout";
+  static final String ENCODING = "encoding";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(ENDPOINT, String.class);
+    STABLE_PROPERTIES.put(TLS, HttpTlsModel.class);
+    STABLE_PROPERTIES.put(HEADERS_LIST, String.class);
+    STABLE_PROPERTIES.put(COMPRESSION, String.class);
+    STABLE_PROPERTIES.put(TIMEOUT, Integer.class);
+    STABLE_PROPERTIES.put(ENCODING, OtlpHttpEncodingModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String endpoint;
   @Nullable private HttpTlsModel tls;
   @Nullable private List<NameStringValuePairModel> headers;
@@ -32,6 +61,7 @@ public class OtlpHttpExporterModel {
   @Nullable private String compression;
   @Nullable private Integer timeout;
   @Nullable private OtlpHttpEncodingModel encoding;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure endpoint, including the signal specific path.
@@ -39,13 +69,16 @@ public class OtlpHttpExporterModel {
    * <p>If omitted or null, the http://localhost:4318/v1/{signal} (where signal is 'traces', 'logs',
    * or 'metrics') is used.
    */
-  @JsonProperty("endpoint")
+  @JsonProperty(ENDPOINT)
   @Nullable
   public String getEndpoint() {
+    if (endpoint == null) {
+      return ExtensionPropertyUtil.getGraduated(ENDPOINT, extensionProperties, String.class);
+    }
     return endpoint;
   }
 
-  @JsonProperty("endpoint")
+  @JsonProperty(ENDPOINT)
   public OtlpHttpExporterModel withEndpoint(String endpoint) {
     this.endpoint = endpoint;
     return this;
@@ -56,13 +89,16 @@ public OtlpHttpExporterModel withEndpoint(String endpoint) {
    *
    * <p>If omitted, system default TLS settings are used.
    */
-  @JsonProperty("tls")
+  @JsonProperty(TLS)
   @Nullable
   public HttpTlsModel getTls() {
+    if (tls == null) {
+      return ExtensionPropertyUtil.getGraduated(TLS, extensionProperties, HttpTlsModel.class);
+    }
     return tls;
   }
 
-  @JsonProperty("tls")
+  @JsonProperty(TLS)
   public OtlpHttpExporterModel withTls(HttpTlsModel tls) {
     this.tls = tls;
     return this;
@@ -75,13 +111,13 @@ public OtlpHttpExporterModel withTls(HttpTlsModel tls) {
    *
    * <p>If omitted, no headers are added.
    */
-  @JsonProperty("headers")
+  @JsonProperty(HEADERS)
   @Nullable
   public List<NameStringValuePairModel> getHeaders() {
     return headers;
   }
 
-  @JsonProperty("headers")
+  @JsonProperty(HEADERS)
   public OtlpHttpExporterModel withHeaders(List<NameStringValuePairModel> headers) {
     this.headers = headers;
     return this;
@@ -97,13 +133,16 @@ public OtlpHttpExporterModel withHeaders(List<NameStringValuePairModel> headers)
    *
    * <p>If omitted or null, no headers are added.
    */
-  @JsonProperty("headers_list")
+  @JsonProperty(HEADERS_LIST)
   @Nullable
   public String getHeadersList() {
+    if (headersList == null) {
+      return ExtensionPropertyUtil.getGraduated(HEADERS_LIST, extensionProperties, String.class);
+    }
     return headersList;
   }
 
-  @JsonProperty("headers_list")
+  @JsonProperty(HEADERS_LIST)
   public OtlpHttpExporterModel withHeadersList(String headersList) {
     this.headersList = headersList;
     return this;
@@ -116,13 +155,16 @@ public OtlpHttpExporterModel withHeadersList(String headersList) {
    *
    * <p>If omitted or null, none is used.
    */
-  @JsonProperty("compression")
+  @JsonProperty(COMPRESSION)
   @Nullable
   public String getCompression() {
+    if (compression == null) {
+      return ExtensionPropertyUtil.getGraduated(COMPRESSION, extensionProperties, String.class);
+    }
     return compression;
   }
 
-  @JsonProperty("compression")
+  @JsonProperty(COMPRESSION)
   public OtlpHttpExporterModel withCompression(String compression) {
     this.compression = compression;
     return this;
@@ -135,13 +177,16 @@ public OtlpHttpExporterModel withCompression(String compression) {
    *
    * <p>If omitted or null, 10000 is used.
    */
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   @Nullable
   public Integer getTimeout() {
+    if (timeout == null) {
+      return ExtensionPropertyUtil.getGraduated(TIMEOUT, extensionProperties, Integer.class);
+    }
     return timeout;
   }
 
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   public OtlpHttpExporterModel withTimeout(Integer timeout) {
     this.timeout = timeout;
     return this;
@@ -160,18 +205,39 @@ public OtlpHttpExporterModel withTimeout(Integer timeout) {
    *
    * <p>If omitted, protobuf is used.
    */
-  @JsonProperty("encoding")
+  @JsonProperty(ENCODING)
   @Nullable
   public OtlpHttpEncodingModel getEncoding() {
+    if (encoding == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ENCODING, extensionProperties, OtlpHttpEncodingModel.class);
+    }
     return encoding;
   }
 
-  @JsonProperty("encoding")
+  @JsonProperty(ENCODING)
   public OtlpHttpExporterModel withEncoding(OtlpHttpEncodingModel encoding) {
     this.encoding = encoding;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public OtlpHttpExporterModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "OtlpHttpExporterModel{"
@@ -189,6 +255,8 @@ public String toString() {
         + timeout
         + ", encoding="
         + encoding
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -209,6 +277,8 @@ public int hashCode() {
     h ^= (this.timeout == null) ? 0 : this.timeout.hashCode();
     h *= 1000003;
     h ^= (this.encoding == null) ? 0 : this.encoding.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -229,7 +299,10 @@ public boolean equals(@Nullable Object o) {
               ? that.compression == null
               : this.compression.equals(that.compression))
           && (this.timeout == null ? that.timeout == null : this.timeout.equals(that.timeout))
-          && (this.encoding == null ? that.encoding == null : this.encoding.equals(that.encoding));
+          && (this.encoding == null ? that.encoding == null : this.encoding.equals(that.encoding))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpHttpMetricExporterModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpHttpMetricExporterModel.java
index 39f49036940..7611551cb52 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpHttpMetricExporterModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/OtlpHttpMetricExporterModel.java
@@ -5,28 +5,72 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel.COMPRESSION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel.DEFAULT_HISTOGRAM_AGGREGATION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel.ENCODING;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel.ENDPOINT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel.HEADERS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel.HEADERS_LIST;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel.TEMPORALITY_PREFERENCE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel.TIMEOUT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel.TLS;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "endpoint",
-  "tls",
-  "headers",
-  "headers_list",
-  "compression",
-  "timeout",
-  "encoding",
-  "temporality_preference",
-  "default_histogram_aggregation"
+  ENDPOINT,
+  TLS,
+  HEADERS,
+  HEADERS_LIST,
+  COMPRESSION,
+  TIMEOUT,
+  ENCODING,
+  TEMPORALITY_PREFERENCE,
+  DEFAULT_HISTOGRAM_AGGREGATION
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class OtlpHttpMetricExporterModel {
 
+  static final String ENDPOINT = "endpoint";
+  static final String TLS = "tls";
+  static final String HEADERS = "headers";
+  static final String HEADERS_LIST = "headers_list";
+  static final String COMPRESSION = "compression";
+  static final String TIMEOUT = "timeout";
+  static final String ENCODING = "encoding";
+  static final String TEMPORALITY_PREFERENCE = "temporality_preference";
+  static final String DEFAULT_HISTOGRAM_AGGREGATION = "default_histogram_aggregation";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(ENDPOINT, String.class);
+    STABLE_PROPERTIES.put(TLS, HttpTlsModel.class);
+    STABLE_PROPERTIES.put(HEADERS_LIST, String.class);
+    STABLE_PROPERTIES.put(COMPRESSION, String.class);
+    STABLE_PROPERTIES.put(TIMEOUT, Integer.class);
+    STABLE_PROPERTIES.put(ENCODING, OtlpHttpEncodingModel.class);
+    STABLE_PROPERTIES.put(TEMPORALITY_PREFERENCE, ExporterTemporalityPreferenceModel.class);
+    STABLE_PROPERTIES.put(
+        DEFAULT_HISTOGRAM_AGGREGATION, ExporterDefaultHistogramAggregationModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String endpoint;
   @Nullable private HttpTlsModel tls;
   @Nullable private List<NameStringValuePairModel> headers;
@@ -36,19 +80,23 @@ public class OtlpHttpMetricExporterModel {
   @Nullable private OtlpHttpEncodingModel encoding;
   @Nullable private ExporterTemporalityPreferenceModel temporalityPreference;
   @Nullable private ExporterDefaultHistogramAggregationModel defaultHistogramAggregation;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure endpoint.
    *
    * <p>If omitted or null, http://localhost:4318/v1/metrics is used.
    */
-  @JsonProperty("endpoint")
+  @JsonProperty(ENDPOINT)
   @Nullable
   public String getEndpoint() {
+    if (endpoint == null) {
+      return ExtensionPropertyUtil.getGraduated(ENDPOINT, extensionProperties, String.class);
+    }
     return endpoint;
   }
 
-  @JsonProperty("endpoint")
+  @JsonProperty(ENDPOINT)
   public OtlpHttpMetricExporterModel withEndpoint(String endpoint) {
     this.endpoint = endpoint;
     return this;
@@ -59,13 +107,16 @@ public OtlpHttpMetricExporterModel withEndpoint(String endpoint) {
    *
    * <p>If omitted, system default TLS settings are used.
    */
-  @JsonProperty("tls")
+  @JsonProperty(TLS)
   @Nullable
   public HttpTlsModel getTls() {
+    if (tls == null) {
+      return ExtensionPropertyUtil.getGraduated(TLS, extensionProperties, HttpTlsModel.class);
+    }
     return tls;
   }
 
-  @JsonProperty("tls")
+  @JsonProperty(TLS)
   public OtlpHttpMetricExporterModel withTls(HttpTlsModel tls) {
     this.tls = tls;
     return this;
@@ -78,13 +129,13 @@ public OtlpHttpMetricExporterModel withTls(HttpTlsModel tls) {
    *
    * <p>If omitted, no headers are added.
    */
-  @JsonProperty("headers")
+  @JsonProperty(HEADERS)
   @Nullable
   public List<NameStringValuePairModel> getHeaders() {
     return headers;
   }
 
-  @JsonProperty("headers")
+  @JsonProperty(HEADERS)
   public OtlpHttpMetricExporterModel withHeaders(List<NameStringValuePairModel> headers) {
     this.headers = headers;
     return this;
@@ -100,13 +151,16 @@ public OtlpHttpMetricExporterModel withHeaders(List<NameStringValuePairModel> he
    *
    * <p>If omitted or null, no headers are added.
    */
-  @JsonProperty("headers_list")
+  @JsonProperty(HEADERS_LIST)
   @Nullable
   public String getHeadersList() {
+    if (headersList == null) {
+      return ExtensionPropertyUtil.getGraduated(HEADERS_LIST, extensionProperties, String.class);
+    }
     return headersList;
   }
 
-  @JsonProperty("headers_list")
+  @JsonProperty(HEADERS_LIST)
   public OtlpHttpMetricExporterModel withHeadersList(String headersList) {
     this.headersList = headersList;
     return this;
@@ -119,13 +173,16 @@ public OtlpHttpMetricExporterModel withHeadersList(String headersList) {
    *
    * <p>If omitted or null, none is used.
    */
-  @JsonProperty("compression")
+  @JsonProperty(COMPRESSION)
   @Nullable
   public String getCompression() {
+    if (compression == null) {
+      return ExtensionPropertyUtil.getGraduated(COMPRESSION, extensionProperties, String.class);
+    }
     return compression;
   }
 
-  @JsonProperty("compression")
+  @JsonProperty(COMPRESSION)
   public OtlpHttpMetricExporterModel withCompression(String compression) {
     this.compression = compression;
     return this;
@@ -138,13 +195,16 @@ public OtlpHttpMetricExporterModel withCompression(String compression) {
    *
    * <p>If omitted or null, 10000 is used.
    */
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   @Nullable
   public Integer getTimeout() {
+    if (timeout == null) {
+      return ExtensionPropertyUtil.getGraduated(TIMEOUT, extensionProperties, Integer.class);
+    }
     return timeout;
   }
 
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   public OtlpHttpMetricExporterModel withTimeout(Integer timeout) {
     this.timeout = timeout;
     return this;
@@ -163,13 +223,17 @@ public OtlpHttpMetricExporterModel withTimeout(Integer timeout) {
    *
    * <p>If omitted, protobuf is used.
    */
-  @JsonProperty("encoding")
+  @JsonProperty(ENCODING)
   @Nullable
   public OtlpHttpEncodingModel getEncoding() {
+    if (encoding == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ENCODING, extensionProperties, OtlpHttpEncodingModel.class);
+    }
     return encoding;
   }
 
-  @JsonProperty("encoding")
+  @JsonProperty(ENCODING)
   public OtlpHttpMetricExporterModel withEncoding(OtlpHttpEncodingModel encoding) {
     this.encoding = encoding;
     return this;
@@ -190,13 +254,17 @@ public OtlpHttpMetricExporterModel withEncoding(OtlpHttpEncodingModel encoding)
    *
    * <p>If omitted, cumulative is used.
    */
-  @JsonProperty("temporality_preference")
+  @JsonProperty(TEMPORALITY_PREFERENCE)
   @Nullable
   public ExporterTemporalityPreferenceModel getTemporalityPreference() {
+    if (temporalityPreference == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          TEMPORALITY_PREFERENCE, extensionProperties, ExporterTemporalityPreferenceModel.class);
+    }
     return temporalityPreference;
   }
 
-  @JsonProperty("temporality_preference")
+  @JsonProperty(TEMPORALITY_PREFERENCE)
   public OtlpHttpMetricExporterModel withTemporalityPreference(
       ExporterTemporalityPreferenceModel temporalityPreference) {
     this.temporalityPreference = temporalityPreference;
@@ -216,19 +284,42 @@ public OtlpHttpMetricExporterModel withTemporalityPreference(
    *
    * <p>If omitted, explicit_bucket_histogram is used.
    */
-  @JsonProperty("default_histogram_aggregation")
+  @JsonProperty(DEFAULT_HISTOGRAM_AGGREGATION)
   @Nullable
   public ExporterDefaultHistogramAggregationModel getDefaultHistogramAggregation() {
+    if (defaultHistogramAggregation == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          DEFAULT_HISTOGRAM_AGGREGATION,
+          extensionProperties,
+          ExporterDefaultHistogramAggregationModel.class);
+    }
     return defaultHistogramAggregation;
   }
 
-  @JsonProperty("default_histogram_aggregation")
+  @JsonProperty(DEFAULT_HISTOGRAM_AGGREGATION)
   public OtlpHttpMetricExporterModel withDefaultHistogramAggregation(
       ExporterDefaultHistogramAggregationModel defaultHistogramAggregation) {
     this.defaultHistogramAggregation = defaultHistogramAggregation;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public OtlpHttpMetricExporterModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "OtlpHttpMetricExporterModel{"
@@ -250,6 +341,8 @@ public String toString() {
         + temporalityPreference
         + ", defaultHistogramAggregation="
         + defaultHistogramAggregation
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -277,6 +370,8 @@ public int hashCode() {
         (this.defaultHistogramAggregation == null)
             ? 0
             : this.defaultHistogramAggregation.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -303,7 +398,10 @@ public boolean equals(@Nullable Object o) {
               : this.temporalityPreference.equals(that.temporalityPreference))
           && (this.defaultHistogramAggregation == null
               ? that.defaultHistogramAggregation == null
-              : this.defaultHistogramAggregation.equals(that.defaultHistogramAggregation));
+              : this.defaultHistogramAggregation.equals(that.defaultHistogramAggregation))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ParentBasedSamplerModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ParentBasedSamplerModel.java
index f01f9aa5c9d..2f1f8d81bee 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ParentBasedSamplerModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ParentBasedSamplerModel.java
@@ -5,41 +5,77 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ParentBasedSamplerModel.LOCAL_PARENT_NOT_SAMPLED;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ParentBasedSamplerModel.LOCAL_PARENT_SAMPLED;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ParentBasedSamplerModel.REMOTE_PARENT_NOT_SAMPLED;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ParentBasedSamplerModel.REMOTE_PARENT_SAMPLED;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ParentBasedSamplerModel.ROOT;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "root",
-  "remote_parent_sampled",
-  "remote_parent_not_sampled",
-  "local_parent_sampled",
-  "local_parent_not_sampled"
+  ROOT,
+  REMOTE_PARENT_SAMPLED,
+  REMOTE_PARENT_NOT_SAMPLED,
+  LOCAL_PARENT_SAMPLED,
+  LOCAL_PARENT_NOT_SAMPLED
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class ParentBasedSamplerModel {
 
+  static final String ROOT = "root";
+  static final String REMOTE_PARENT_SAMPLED = "remote_parent_sampled";
+  static final String REMOTE_PARENT_NOT_SAMPLED = "remote_parent_not_sampled";
+  static final String LOCAL_PARENT_SAMPLED = "local_parent_sampled";
+  static final String LOCAL_PARENT_NOT_SAMPLED = "local_parent_not_sampled";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(ROOT, SamplerModel.class);
+    STABLE_PROPERTIES.put(REMOTE_PARENT_SAMPLED, SamplerModel.class);
+    STABLE_PROPERTIES.put(REMOTE_PARENT_NOT_SAMPLED, SamplerModel.class);
+    STABLE_PROPERTIES.put(LOCAL_PARENT_SAMPLED, SamplerModel.class);
+    STABLE_PROPERTIES.put(LOCAL_PARENT_NOT_SAMPLED, SamplerModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private SamplerModel root;
   @Nullable private SamplerModel remoteParentSampled;
   @Nullable private SamplerModel remoteParentNotSampled;
   @Nullable private SamplerModel localParentSampled;
   @Nullable private SamplerModel localParentNotSampled;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure root sampler.
    *
    * <p>If omitted, always_on is used.
    */
-  @JsonProperty("root")
+  @JsonProperty(ROOT)
   @Nullable
   public SamplerModel getRoot() {
+    if (root == null) {
+      return ExtensionPropertyUtil.getGraduated(ROOT, extensionProperties, SamplerModel.class);
+    }
     return root;
   }
 
-  @JsonProperty("root")
+  @JsonProperty(ROOT)
   public ParentBasedSamplerModel withRoot(SamplerModel root) {
     this.root = root;
     return this;
@@ -50,13 +86,17 @@ public ParentBasedSamplerModel withRoot(SamplerModel root) {
    *
    * <p>If omitted, always_on is used.
    */
-  @JsonProperty("remote_parent_sampled")
+  @JsonProperty(REMOTE_PARENT_SAMPLED)
   @Nullable
   public SamplerModel getRemoteParentSampled() {
+    if (remoteParentSampled == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          REMOTE_PARENT_SAMPLED, extensionProperties, SamplerModel.class);
+    }
     return remoteParentSampled;
   }
 
-  @JsonProperty("remote_parent_sampled")
+  @JsonProperty(REMOTE_PARENT_SAMPLED)
   public ParentBasedSamplerModel withRemoteParentSampled(SamplerModel remoteParentSampled) {
     this.remoteParentSampled = remoteParentSampled;
     return this;
@@ -67,13 +107,17 @@ public ParentBasedSamplerModel withRemoteParentSampled(SamplerModel remoteParent
    *
    * <p>If omitted, always_off is used.
    */
-  @JsonProperty("remote_parent_not_sampled")
+  @JsonProperty(REMOTE_PARENT_NOT_SAMPLED)
   @Nullable
   public SamplerModel getRemoteParentNotSampled() {
+    if (remoteParentNotSampled == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          REMOTE_PARENT_NOT_SAMPLED, extensionProperties, SamplerModel.class);
+    }
     return remoteParentNotSampled;
   }
 
-  @JsonProperty("remote_parent_not_sampled")
+  @JsonProperty(REMOTE_PARENT_NOT_SAMPLED)
   public ParentBasedSamplerModel withRemoteParentNotSampled(SamplerModel remoteParentNotSampled) {
     this.remoteParentNotSampled = remoteParentNotSampled;
     return this;
@@ -84,13 +128,17 @@ public ParentBasedSamplerModel withRemoteParentNotSampled(SamplerModel remotePar
    *
    * <p>If omitted, always_on is used.
    */
-  @JsonProperty("local_parent_sampled")
+  @JsonProperty(LOCAL_PARENT_SAMPLED)
   @Nullable
   public SamplerModel getLocalParentSampled() {
+    if (localParentSampled == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          LOCAL_PARENT_SAMPLED, extensionProperties, SamplerModel.class);
+    }
     return localParentSampled;
   }
 
-  @JsonProperty("local_parent_sampled")
+  @JsonProperty(LOCAL_PARENT_SAMPLED)
   public ParentBasedSamplerModel withLocalParentSampled(SamplerModel localParentSampled) {
     this.localParentSampled = localParentSampled;
     return this;
@@ -101,18 +149,39 @@ public ParentBasedSamplerModel withLocalParentSampled(SamplerModel localParentSa
    *
    * <p>If omitted, always_off is used.
    */
-  @JsonProperty("local_parent_not_sampled")
+  @JsonProperty(LOCAL_PARENT_NOT_SAMPLED)
   @Nullable
   public SamplerModel getLocalParentNotSampled() {
+    if (localParentNotSampled == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          LOCAL_PARENT_NOT_SAMPLED, extensionProperties, SamplerModel.class);
+    }
     return localParentNotSampled;
   }
 
-  @JsonProperty("local_parent_not_sampled")
+  @JsonProperty(LOCAL_PARENT_NOT_SAMPLED)
   public ParentBasedSamplerModel withLocalParentNotSampled(SamplerModel localParentNotSampled) {
     this.localParentNotSampled = localParentNotSampled;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public ParentBasedSamplerModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "ParentBasedSamplerModel{"
@@ -126,6 +195,8 @@ public String toString() {
         + localParentSampled
         + ", localParentNotSampled="
         + localParentNotSampled
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -142,6 +213,8 @@ public int hashCode() {
     h ^= (this.localParentSampled == null) ? 0 : this.localParentSampled.hashCode();
     h *= 1000003;
     h ^= (this.localParentNotSampled == null) ? 0 : this.localParentNotSampled.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -164,7 +237,10 @@ public boolean equals(@Nullable Object o) {
               : this.localParentSampled.equals(that.localParentSampled))
           && (this.localParentNotSampled == null
               ? that.localParentNotSampled == null
-              : this.localParentNotSampled.equals(that.localParentNotSampled));
+              : this.localParentNotSampled.equals(that.localParentNotSampled))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PeriodicMetricReaderModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PeriodicMetricReaderModel.java
index dd57f519a4f..3ee25f37057 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PeriodicMetricReaderModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PeriodicMetricReaderModel.java
@@ -5,31 +5,55 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PeriodicMetricReaderModel.CARDINALITY_LIMITS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PeriodicMetricReaderModel.EXPORTER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PeriodicMetricReaderModel.INTERVAL;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PeriodicMetricReaderModel.PRODUCERS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PeriodicMetricReaderModel.TIMEOUT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.PeriodicMetricReaderModelAccessor.EXPERIMENTAL_PROPERTIES;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({
-  "interval",
-  "timeout",
-  "max_export_batch_size/development",
-  "exporter",
-  "producers",
-  "cardinality_limits"
-})
+@JsonPropertyOrder({INTERVAL, TIMEOUT, EXPORTER, PRODUCERS, CARDINALITY_LIMITS})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class PeriodicMetricReaderModel {
 
+  static final String INTERVAL = "interval";
+  static final String TIMEOUT = "timeout";
+  static final String EXPORTER = "exporter";
+  static final String PRODUCERS = "producers";
+  static final String CARDINALITY_LIMITS = "cardinality_limits";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(INTERVAL, Integer.class);
+    STABLE_PROPERTIES.put(TIMEOUT, Integer.class);
+    STABLE_PROPERTIES.put(EXPORTER, PushMetricExporterModel.class);
+    STABLE_PROPERTIES.put(CARDINALITY_LIMITS, CardinalityLimitsModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private Integer interval;
   @Nullable private Integer timeout;
-  @Nullable private Integer maxExportBatchSizeDevelopment;
   @Nullable private PushMetricExporterModel exporter;
   @Nullable private List<MetricProducerModel> producers;
   @Nullable private CardinalityLimitsModel cardinalityLimits;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure delay interval (in milliseconds) between start of two consecutive exports.
@@ -38,13 +62,16 @@ public class PeriodicMetricReaderModel {
    *
    * <p>If omitted or null, 60000 is used.
    */
-  @JsonProperty("interval")
+  @JsonProperty(INTERVAL)
   @Nullable
   public Integer getInterval() {
+    if (interval == null) {
+      return ExtensionPropertyUtil.getGraduated(INTERVAL, extensionProperties, Integer.class);
+    }
     return interval;
   }
 
-  @JsonProperty("interval")
+  @JsonProperty(INTERVAL)
   public PeriodicMetricReaderModel withInterval(Integer interval) {
     this.interval = interval;
     return this;
@@ -57,48 +84,37 @@ public PeriodicMetricReaderModel withInterval(Integer interval) {
    *
    * <p>If omitted or null, 30000 is used.
    */
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   @Nullable
   public Integer getTimeout() {
+    if (timeout == null) {
+      return ExtensionPropertyUtil.getGraduated(TIMEOUT, extensionProperties, Integer.class);
+    }
     return timeout;
   }
 
-  @JsonProperty("timeout")
+  @JsonProperty(TIMEOUT)
   public PeriodicMetricReaderModel withTimeout(Integer timeout) {
     this.timeout = timeout;
     return this;
   }
 
-  /**
-   * Configure maximum export batch size.
-   *
-   * <p>If omitted or null, no limit is used.
-   */
-  @JsonProperty("max_export_batch_size/development")
-  @Nullable
-  public Integer getMaxExportBatchSizeDevelopment() {
-    return maxExportBatchSizeDevelopment;
-  }
-
-  @JsonProperty("max_export_batch_size/development")
-  public PeriodicMetricReaderModel withMaxExportBatchSizeDevelopment(
-      Integer maxExportBatchSizeDevelopment) {
-    this.maxExportBatchSizeDevelopment = maxExportBatchSizeDevelopment;
-    return this;
-  }
-
   /**
    * Configure exporter.
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   @Nullable
   public PushMetricExporterModel getExporter() {
+    if (exporter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EXPORTER, extensionProperties, PushMetricExporterModel.class);
+    }
     return exporter;
   }
 
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   public PeriodicMetricReaderModel withExporter(PushMetricExporterModel exporter) {
     this.exporter = exporter;
     return this;
@@ -109,13 +125,13 @@ public PeriodicMetricReaderModel withExporter(PushMetricExporterModel exporter)
    *
    * <p>If omitted, no metric producers are added.
    */
-  @JsonProperty("producers")
+  @JsonProperty(PRODUCERS)
   @Nullable
   public List<MetricProducerModel> getProducers() {
     return producers;
   }
 
-  @JsonProperty("producers")
+  @JsonProperty(PRODUCERS)
   public PeriodicMetricReaderModel withProducers(List<MetricProducerModel> producers) {
     this.producers = producers;
     return this;
@@ -126,18 +142,39 @@ public PeriodicMetricReaderModel withProducers(List<MetricProducerModel> produce
    *
    * <p>If omitted, default values as described in CardinalityLimits are used.
    */
-  @JsonProperty("cardinality_limits")
+  @JsonProperty(CARDINALITY_LIMITS)
   @Nullable
   public CardinalityLimitsModel getCardinalityLimits() {
+    if (cardinalityLimits == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          CARDINALITY_LIMITS, extensionProperties, CardinalityLimitsModel.class);
+    }
     return cardinalityLimits;
   }
 
-  @JsonProperty("cardinality_limits")
+  @JsonProperty(CARDINALITY_LIMITS)
   public PeriodicMetricReaderModel withCardinalityLimits(CardinalityLimitsModel cardinalityLimits) {
     this.cardinalityLimits = cardinalityLimits;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public PeriodicMetricReaderModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "PeriodicMetricReaderModel{"
@@ -145,14 +182,14 @@ public String toString() {
         + interval
         + ", timeout="
         + timeout
-        + ", maxExportBatchSizeDevelopment="
-        + maxExportBatchSizeDevelopment
         + ", exporter="
         + exporter
         + ", producers="
         + producers
         + ", cardinalityLimits="
         + cardinalityLimits
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -164,16 +201,13 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.timeout == null) ? 0 : this.timeout.hashCode();
     h *= 1000003;
-    h ^=
-        (this.maxExportBatchSizeDevelopment == null)
-            ? 0
-            : this.maxExportBatchSizeDevelopment.hashCode();
-    h *= 1000003;
     h ^= (this.exporter == null) ? 0 : this.exporter.hashCode();
     h *= 1000003;
     h ^= (this.producers == null) ? 0 : this.producers.hashCode();
     h *= 1000003;
     h ^= (this.cardinalityLimits == null) ? 0 : this.cardinalityLimits.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -186,16 +220,16 @@ public boolean equals(@Nullable Object o) {
       PeriodicMetricReaderModel that = (PeriodicMetricReaderModel) o;
       return (this.interval == null ? that.interval == null : this.interval.equals(that.interval))
           && (this.timeout == null ? that.timeout == null : this.timeout.equals(that.timeout))
-          && (this.maxExportBatchSizeDevelopment == null
-              ? that.maxExportBatchSizeDevelopment == null
-              : this.maxExportBatchSizeDevelopment.equals(that.maxExportBatchSizeDevelopment))
           && (this.exporter == null ? that.exporter == null : this.exporter.equals(that.exporter))
           && (this.producers == null
               ? that.producers == null
               : this.producers.equals(that.producers))
           && (this.cardinalityLimits == null
               ? that.cardinalityLimits == null
-              : this.cardinalityLimits.equals(that.cardinalityLimits));
+              : this.cardinalityLimits.equals(that.cardinalityLimits))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PropagatorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PropagatorModel.java
index b33f84f1963..a651c3b4c97 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PropagatorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PropagatorModel.java
@@ -5,20 +5,43 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PropagatorModel.COMPOSITE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PropagatorModel.COMPOSITE_LIST;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"composite", "composite_list"})
+@JsonPropertyOrder({COMPOSITE, COMPOSITE_LIST})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class PropagatorModel {
 
+  static final String COMPOSITE = "composite";
+  static final String COMPOSITE_LIST = "composite_list";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(COMPOSITE_LIST, String.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private List<TextMapPropagatorModel> composite;
   @Nullable private String compositeList;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure the propagators in the composite text map propagator. Entries from .composite_list
@@ -29,13 +52,13 @@ public class PropagatorModel {
    *
    * <p>If omitted, and .composite_list is omitted or null, a noop propagator is used.
    */
-  @JsonProperty("composite")
+  @JsonProperty(COMPOSITE)
   @Nullable
   public List<TextMapPropagatorModel> getComposite() {
     return composite;
   }
 
-  @JsonProperty("composite")
+  @JsonProperty(COMPOSITE)
   public PropagatorModel withComposite(List<TextMapPropagatorModel> composite) {
     this.composite = composite;
     return this;
@@ -55,21 +78,48 @@ public PropagatorModel withComposite(List<TextMapPropagatorModel> composite) {
    *
    * <p>If omitted or null, and .composite is omitted or null, a noop propagator is used.
    */
-  @JsonProperty("composite_list")
+  @JsonProperty(COMPOSITE_LIST)
   @Nullable
   public String getCompositeList() {
+    if (compositeList == null) {
+      return ExtensionPropertyUtil.getGraduated(COMPOSITE_LIST, extensionProperties, String.class);
+    }
     return compositeList;
   }
 
-  @JsonProperty("composite_list")
+  @JsonProperty(COMPOSITE_LIST)
   public PropagatorModel withCompositeList(String compositeList) {
     this.compositeList = compositeList;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public PropagatorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
-    return "PropagatorModel{" + "composite=" + composite + ", compositeList=" + compositeList + "}";
+    return "PropagatorModel{"
+        + "composite="
+        + composite
+        + ", compositeList="
+        + compositeList
+        + ", extensionProperties="
+        + extensionProperties
+        + "}";
   }
 
   @Override
@@ -79,6 +129,8 @@ public int hashCode() {
     h ^= (this.composite == null) ? 0 : this.composite.hashCode();
     h *= 1000003;
     h ^= (this.compositeList == null) ? 0 : this.compositeList.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -94,7 +146,10 @@ public boolean equals(@Nullable Object o) {
               : this.composite.equals(that.composite))
           && (this.compositeList == null
               ? that.compositeList == null
-              : this.compositeList.equals(that.compositeList));
+              : this.compositeList.equals(that.compositeList))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricExporterModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricExporterModel.java
index a726171f0fb..211eb34b8e7 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricExporterModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricExporterModel.java
@@ -5,73 +5,55 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.PullMetricExporterModelAccessor.EXPERIMENTAL_PROPERTIES;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalPrometheusMetricExporterModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"prometheus/development"})
+@JsonPropertyOrder({})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class PullMetricExporterModel {
 
-  @Nullable private ExperimentalPrometheusMetricExporterModel prometheusDevelopment;
-  private Map<String, PullMetricExporterPropertyModel> additionalProperties =
-      new LinkedHashMap<String, PullMetricExporterPropertyModel>();
-
-  /**
-   * Configure exporter to be prometheus.
-   *
-   * <p>If omitted, ignore.
-   */
-  @JsonProperty("prometheus/development")
-  @Nullable
-  public ExperimentalPrometheusMetricExporterModel getPrometheusDevelopment() {
-    return prometheusDevelopment;
-  }
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
 
-  @JsonProperty("prometheus/development")
-  public PullMetricExporterModel withPrometheusDevelopment(
-      ExperimentalPrometheusMetricExporterModel prometheusDevelopment) {
-    this.prometheusDevelopment = prometheusDevelopment;
-    return this;
-  }
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   @JsonAnyGetter
-  public Map<String, PullMetricExporterPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return extensionProperties;
   }
 
   @JsonAnySetter
-  public PullMetricExporterModel withAdditionalProperty(
-      String name, PullMetricExporterPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public PullMetricExporterModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        Collections.emptyMap(),
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
   @Override
   public String toString() {
-    return "PullMetricExporterModel{"
-        + "prometheusDevelopment="
-        + prometheusDevelopment
-        + ", additionalProperties="
-        + additionalProperties
-        + "}";
+    return "PullMetricExporterModel{" + "extensionProperties=" + extensionProperties + "}";
   }
 
   @Override
   public int hashCode() {
     int h = 1;
     h *= 1000003;
-    h ^= (this.prometheusDevelopment == null) ? 0 : this.prometheusDevelopment.hashCode();
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -82,12 +64,9 @@ public boolean equals(@Nullable Object o) {
     }
     if (o instanceof PullMetricExporterModel) {
       PullMetricExporterModel that = (PullMetricExporterModel) o;
-      return (this.prometheusDevelopment == null
-              ? that.prometheusDevelopment == null
-              : this.prometheusDevelopment.equals(that.prometheusDevelopment))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+      return (this.extensionProperties == null
+          ? that.extensionProperties == null
+          : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricExporterPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricExporterPropertyModel.java
deleted file mode 100644
index 31f63b61f57..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricExporterPropertyModel.java
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class PullMetricExporterPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public PullMetricExporterPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "PullMetricExporterPropertyModel{"
-        + "additionalProperties="
-        + additionalProperties
-        + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof PullMetricExporterPropertyModel) {
-      PullMetricExporterPropertyModel that = (PullMetricExporterPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricReaderModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricReaderModel.java
index 0f42674be09..6cde4d331d3 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricReaderModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PullMetricReaderModel.java
@@ -5,34 +5,64 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PullMetricReaderModel.CARDINALITY_LIMITS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PullMetricReaderModel.EXPORTER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PullMetricReaderModel.PRODUCERS;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"exporter", "producers", "cardinality_limits"})
+@JsonPropertyOrder({EXPORTER, PRODUCERS, CARDINALITY_LIMITS})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class PullMetricReaderModel {
 
+  static final String EXPORTER = "exporter";
+  static final String PRODUCERS = "producers";
+  static final String CARDINALITY_LIMITS = "cardinality_limits";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(EXPORTER, PullMetricExporterModel.class);
+    STABLE_PROPERTIES.put(CARDINALITY_LIMITS, CardinalityLimitsModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private PullMetricExporterModel exporter;
   @Nullable private List<MetricProducerModel> producers;
   @Nullable private CardinalityLimitsModel cardinalityLimits;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure exporter.
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   @Nullable
   public PullMetricExporterModel getExporter() {
+    if (exporter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EXPORTER, extensionProperties, PullMetricExporterModel.class);
+    }
     return exporter;
   }
 
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   public PullMetricReaderModel withExporter(PullMetricExporterModel exporter) {
     this.exporter = exporter;
     return this;
@@ -43,13 +73,13 @@ public PullMetricReaderModel withExporter(PullMetricExporterModel exporter) {
    *
    * <p>If omitted, no metric producers are added.
    */
-  @JsonProperty("producers")
+  @JsonProperty(PRODUCERS)
   @Nullable
   public List<MetricProducerModel> getProducers() {
     return producers;
   }
 
-  @JsonProperty("producers")
+  @JsonProperty(PRODUCERS)
   public PullMetricReaderModel withProducers(List<MetricProducerModel> producers) {
     this.producers = producers;
     return this;
@@ -60,18 +90,39 @@ public PullMetricReaderModel withProducers(List<MetricProducerModel> producers)
    *
    * <p>If omitted, default values as described in CardinalityLimits are used.
    */
-  @JsonProperty("cardinality_limits")
+  @JsonProperty(CARDINALITY_LIMITS)
   @Nullable
   public CardinalityLimitsModel getCardinalityLimits() {
+    if (cardinalityLimits == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          CARDINALITY_LIMITS, extensionProperties, CardinalityLimitsModel.class);
+    }
     return cardinalityLimits;
   }
 
-  @JsonProperty("cardinality_limits")
+  @JsonProperty(CARDINALITY_LIMITS)
   public PullMetricReaderModel withCardinalityLimits(CardinalityLimitsModel cardinalityLimits) {
     this.cardinalityLimits = cardinalityLimits;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public PullMetricReaderModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "PullMetricReaderModel{"
@@ -81,6 +132,8 @@ public String toString() {
         + producers
         + ", cardinalityLimits="
         + cardinalityLimits
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -93,6 +146,8 @@ public int hashCode() {
     h ^= (this.producers == null) ? 0 : this.producers.hashCode();
     h *= 1000003;
     h ^= (this.cardinalityLimits == null) ? 0 : this.cardinalityLimits.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -109,7 +164,10 @@ public boolean equals(@Nullable Object o) {
               : this.producers.equals(that.producers))
           && (this.cardinalityLimits == null
               ? that.cardinalityLimits == null
-              : this.cardinalityLimits.equals(that.cardinalityLimits));
+              : this.cardinalityLimits.equals(that.cardinalityLimits))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PushMetricExporterModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PushMetricExporterModel.java
index bbccec6a37f..a0e78f47b3c 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PushMetricExporterModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PushMetricExporterModel.java
@@ -5,41 +5,64 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PushMetricExporterModel.CONSOLE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PushMetricExporterModel.OTLP_GRPC;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PushMetricExporterModel.OTLP_HTTP;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.PushMetricExporterModelAccessor.EXPERIMENTAL_PROPERTIES;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalOtlpFileMetricExporterModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"otlp_http", "otlp_grpc", "otlp_file/development", "console"})
+@JsonPropertyOrder({OTLP_HTTP, OTLP_GRPC, CONSOLE})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class PushMetricExporterModel {
 
+  static final String OTLP_HTTP = "otlp_http";
+  static final String OTLP_GRPC = "otlp_grpc";
+  static final String CONSOLE = "console";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(OTLP_HTTP, OtlpHttpMetricExporterModel.class);
+    STABLE_PROPERTIES.put(OTLP_GRPC, OtlpGrpcMetricExporterModel.class);
+    STABLE_PROPERTIES.put(CONSOLE, ConsoleMetricExporterModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
   @Nullable private OtlpHttpMetricExporterModel otlpHttp;
   @Nullable private OtlpGrpcMetricExporterModel otlpGrpc;
-  @Nullable private ExperimentalOtlpFileMetricExporterModel otlpFileDevelopment;
   @Nullable private ConsoleMetricExporterModel console;
-  private Map<String, PushMetricExporterPropertyModel> additionalProperties =
-      new LinkedHashMap<String, PushMetricExporterPropertyModel>();
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure exporter to be OTLP with HTTP transport.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("otlp_http")
+  @JsonProperty(OTLP_HTTP)
   @Nullable
   public OtlpHttpMetricExporterModel getOtlpHttp() {
+    if (otlpHttp == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OTLP_HTTP, extensionProperties, OtlpHttpMetricExporterModel.class);
+    }
     return otlpHttp;
   }
 
-  @JsonProperty("otlp_http")
+  @JsonProperty(OTLP_HTTP)
   public PushMetricExporterModel withOtlpHttp(OtlpHttpMetricExporterModel otlpHttp) {
     this.otlpHttp = otlpHttp;
     return this;
@@ -50,62 +73,57 @@ public PushMetricExporterModel withOtlpHttp(OtlpHttpMetricExporterModel otlpHttp
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("otlp_grpc")
+  @JsonProperty(OTLP_GRPC)
   @Nullable
   public OtlpGrpcMetricExporterModel getOtlpGrpc() {
+    if (otlpGrpc == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OTLP_GRPC, extensionProperties, OtlpGrpcMetricExporterModel.class);
+    }
     return otlpGrpc;
   }
 
-  @JsonProperty("otlp_grpc")
+  @JsonProperty(OTLP_GRPC)
   public PushMetricExporterModel withOtlpGrpc(OtlpGrpcMetricExporterModel otlpGrpc) {
     this.otlpGrpc = otlpGrpc;
     return this;
   }
 
-  /**
-   * Configure exporter to be OTLP with file transport.
-   *
-   * <p>If omitted, ignore.
-   */
-  @JsonProperty("otlp_file/development")
-  @Nullable
-  public ExperimentalOtlpFileMetricExporterModel getOtlpFileDevelopment() {
-    return otlpFileDevelopment;
-  }
-
-  @JsonProperty("otlp_file/development")
-  public PushMetricExporterModel withOtlpFileDevelopment(
-      ExperimentalOtlpFileMetricExporterModel otlpFileDevelopment) {
-    this.otlpFileDevelopment = otlpFileDevelopment;
-    return this;
-  }
-
   /**
    * Configure exporter to be console.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("console")
+  @JsonProperty(CONSOLE)
   @Nullable
   public ConsoleMetricExporterModel getConsole() {
+    if (console == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          CONSOLE, extensionProperties, ConsoleMetricExporterModel.class);
+    }
     return console;
   }
 
-  @JsonProperty("console")
+  @JsonProperty(CONSOLE)
   public PushMetricExporterModel withConsole(ConsoleMetricExporterModel console) {
     this.console = console;
     return this;
   }
 
   @JsonAnyGetter
-  public Map<String, PushMetricExporterPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public PushMetricExporterModel withAdditionalProperty(
-      String name, PushMetricExporterPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public PushMetricExporterModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -116,12 +134,10 @@ public String toString() {
         + otlpHttp
         + ", otlpGrpc="
         + otlpGrpc
-        + ", otlpFileDevelopment="
-        + otlpFileDevelopment
         + ", console="
         + console
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -133,11 +149,9 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.otlpGrpc == null) ? 0 : this.otlpGrpc.hashCode();
     h *= 1000003;
-    h ^= (this.otlpFileDevelopment == null) ? 0 : this.otlpFileDevelopment.hashCode();
-    h *= 1000003;
     h ^= (this.console == null) ? 0 : this.console.hashCode();
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -150,13 +164,10 @@ public boolean equals(@Nullable Object o) {
       PushMetricExporterModel that = (PushMetricExporterModel) o;
       return (this.otlpHttp == null ? that.otlpHttp == null : this.otlpHttp.equals(that.otlpHttp))
           && (this.otlpGrpc == null ? that.otlpGrpc == null : this.otlpGrpc.equals(that.otlpGrpc))
-          && (this.otlpFileDevelopment == null
-              ? that.otlpFileDevelopment == null
-              : this.otlpFileDevelopment.equals(that.otlpFileDevelopment))
           && (this.console == null ? that.console == null : this.console.equals(that.console))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PushMetricExporterPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PushMetricExporterPropertyModel.java
deleted file mode 100644
index be108906ead..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/PushMetricExporterPropertyModel.java
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class PushMetricExporterPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public PushMetricExporterPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "PushMetricExporterPropertyModel{"
-        + "additionalProperties="
-        + additionalProperties
-        + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof PushMetricExporterPropertyModel) {
-      PushMetricExporterPropertyModel that = (PushMetricExporterPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ResourceModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ResourceModel.java
index 2fdbe659927..a9c71837edc 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ResourceModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ResourceModel.java
@@ -5,23 +5,47 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ResourceModel.ATTRIBUTES;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ResourceModel.ATTRIBUTES_LIST;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ResourceModel.SCHEMA_URL;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ResourceModelAccessor.EXPERIMENTAL_PROPERTIES;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalResourceDetectionModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"attributes", "detection/development", "schema_url", "attributes_list"})
+@JsonPropertyOrder({ATTRIBUTES, SCHEMA_URL, ATTRIBUTES_LIST})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class ResourceModel {
 
+  static final String ATTRIBUTES = "attributes";
+  static final String SCHEMA_URL = "schema_url";
+  static final String ATTRIBUTES_LIST = "attributes_list";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(SCHEMA_URL, String.class);
+    STABLE_PROPERTIES.put(ATTRIBUTES_LIST, String.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private List<AttributeNameValueModel> attributes;
-  @Nullable private ExperimentalResourceDetectionModel detectionDevelopment;
   @Nullable private String schemaUrl;
   @Nullable private String attributesList;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure resource attributes. Entries have higher priority than entries from
@@ -29,48 +53,33 @@ public class ResourceModel {
    *
    * <p>If omitted, no resource attributes are added.
    */
-  @JsonProperty("attributes")
+  @JsonProperty(ATTRIBUTES)
   @Nullable
   public List<AttributeNameValueModel> getAttributes() {
     return attributes;
   }
 
-  @JsonProperty("attributes")
+  @JsonProperty(ATTRIBUTES)
   public ResourceModel withAttributes(List<AttributeNameValueModel> attributes) {
     this.attributes = attributes;
     return this;
   }
 
-  /**
-   * Configure resource detection.
-   *
-   * <p>If omitted, resource detection is disabled.
-   */
-  @JsonProperty("detection/development")
-  @Nullable
-  public ExperimentalResourceDetectionModel getDetectionDevelopment() {
-    return detectionDevelopment;
-  }
-
-  @JsonProperty("detection/development")
-  public ResourceModel withDetectionDevelopment(
-      ExperimentalResourceDetectionModel detectionDevelopment) {
-    this.detectionDevelopment = detectionDevelopment;
-    return this;
-  }
-
   /**
    * Configure resource schema URL.
    *
    * <p>If omitted or null, no schema URL is used.
    */
-  @JsonProperty("schema_url")
+  @JsonProperty(SCHEMA_URL)
   @Nullable
   public String getSchemaUrl() {
+    if (schemaUrl == null) {
+      return ExtensionPropertyUtil.getGraduated(SCHEMA_URL, extensionProperties, String.class);
+    }
     return schemaUrl;
   }
 
-  @JsonProperty("schema_url")
+  @JsonProperty(SCHEMA_URL)
   public ResourceModel withSchemaUrl(String schemaUrl) {
     this.schemaUrl = schemaUrl;
     return this;
@@ -87,29 +96,49 @@ public ResourceModel withSchemaUrl(String schemaUrl) {
    *
    * <p>If omitted or null, no resource attributes are added.
    */
-  @JsonProperty("attributes_list")
+  @JsonProperty(ATTRIBUTES_LIST)
   @Nullable
   public String getAttributesList() {
+    if (attributesList == null) {
+      return ExtensionPropertyUtil.getGraduated(ATTRIBUTES_LIST, extensionProperties, String.class);
+    }
     return attributesList;
   }
 
-  @JsonProperty("attributes_list")
+  @JsonProperty(ATTRIBUTES_LIST)
   public ResourceModel withAttributesList(String attributesList) {
     this.attributesList = attributesList;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public ResourceModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "ResourceModel{"
         + "attributes="
         + attributes
-        + ", detectionDevelopment="
-        + detectionDevelopment
         + ", schemaUrl="
         + schemaUrl
         + ", attributesList="
         + attributesList
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -119,11 +148,11 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.attributes == null) ? 0 : this.attributes.hashCode();
     h *= 1000003;
-    h ^= (this.detectionDevelopment == null) ? 0 : this.detectionDevelopment.hashCode();
-    h *= 1000003;
     h ^= (this.schemaUrl == null) ? 0 : this.schemaUrl.hashCode();
     h *= 1000003;
     h ^= (this.attributesList == null) ? 0 : this.attributesList.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -137,15 +166,15 @@ public boolean equals(@Nullable Object o) {
       return (this.attributes == null
               ? that.attributes == null
               : this.attributes.equals(that.attributes))
-          && (this.detectionDevelopment == null
-              ? that.detectionDevelopment == null
-              : this.detectionDevelopment.equals(that.detectionDevelopment))
           && (this.schemaUrl == null
               ? that.schemaUrl == null
               : this.schemaUrl.equals(that.schemaUrl))
           && (this.attributesList == null
               ? that.attributesList == null
-              : this.attributesList.equals(that.attributesList));
+              : this.attributesList.equals(that.attributesList))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SamplerModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SamplerModel.java
index e1bdccdc782..6021ebebfe8 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SamplerModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SamplerModel.java
@@ -5,54 +5,68 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerModel.ALWAYS_OFF;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerModel.ALWAYS_ON;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerModel.PARENT_BASED;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerModel.TRACE_ID_RATIO_BASED;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.SamplerModelAccessor.EXPERIMENTAL_PROPERTIES;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalComposableSamplerModel;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalJaegerRemoteSamplerModel;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalProbabilitySamplerModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({
-  "always_off",
-  "always_on",
-  "composite/development",
-  "jaeger_remote/development",
-  "parent_based",
-  "probability/development",
-  "trace_id_ratio_based"
-})
+@JsonPropertyOrder({ALWAYS_OFF, ALWAYS_ON, PARENT_BASED, TRACE_ID_RATIO_BASED})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class SamplerModel {
 
+  static final String ALWAYS_OFF = "always_off";
+  static final String ALWAYS_ON = "always_on";
+  static final String PARENT_BASED = "parent_based";
+  static final String TRACE_ID_RATIO_BASED = "trace_id_ratio_based";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(ALWAYS_OFF, AlwaysOffSamplerModel.class);
+    STABLE_PROPERTIES.put(ALWAYS_ON, AlwaysOnSamplerModel.class);
+    STABLE_PROPERTIES.put(PARENT_BASED, ParentBasedSamplerModel.class);
+    STABLE_PROPERTIES.put(TRACE_ID_RATIO_BASED, TraceIdRatioBasedSamplerModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
   @Nullable private AlwaysOffSamplerModel alwaysOff;
   @Nullable private AlwaysOnSamplerModel alwaysOn;
-  @Nullable private ExperimentalComposableSamplerModel compositeDevelopment;
-  @Nullable private ExperimentalJaegerRemoteSamplerModel jaegerRemoteDevelopment;
   @Nullable private ParentBasedSamplerModel parentBased;
-  @Nullable private ExperimentalProbabilitySamplerModel probabilityDevelopment;
   @Nullable private TraceIdRatioBasedSamplerModel traceIdRatioBased;
-  private Map<String, SamplerPropertyModel> additionalProperties =
-      new LinkedHashMap<String, SamplerPropertyModel>();
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure sampler to be always_off.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("always_off")
+  @JsonProperty(ALWAYS_OFF)
   @Nullable
   public AlwaysOffSamplerModel getAlwaysOff() {
+    if (alwaysOff == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ALWAYS_OFF, extensionProperties, AlwaysOffSamplerModel.class);
+    }
     return alwaysOff;
   }
 
-  @JsonProperty("always_off")
+  @JsonProperty(ALWAYS_OFF)
   public SamplerModel withAlwaysOff(AlwaysOffSamplerModel alwaysOff) {
     this.alwaysOff = alwaysOff;
     return this;
@@ -63,114 +77,78 @@ public SamplerModel withAlwaysOff(AlwaysOffSamplerModel alwaysOff) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("always_on")
+  @JsonProperty(ALWAYS_ON)
   @Nullable
   public AlwaysOnSamplerModel getAlwaysOn() {
+    if (alwaysOn == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ALWAYS_ON, extensionProperties, AlwaysOnSamplerModel.class);
+    }
     return alwaysOn;
   }
 
-  @JsonProperty("always_on")
+  @JsonProperty(ALWAYS_ON)
   public SamplerModel withAlwaysOn(AlwaysOnSamplerModel alwaysOn) {
     this.alwaysOn = alwaysOn;
     return this;
   }
 
-  /**
-   * Configure sampler to be composite.
-   *
-   * <p>If omitted, ignore.
-   */
-  @JsonProperty("composite/development")
-  @Nullable
-  public ExperimentalComposableSamplerModel getCompositeDevelopment() {
-    return compositeDevelopment;
-  }
-
-  @JsonProperty("composite/development")
-  public SamplerModel withCompositeDevelopment(
-      ExperimentalComposableSamplerModel compositeDevelopment) {
-    this.compositeDevelopment = compositeDevelopment;
-    return this;
-  }
-
-  /**
-   * Configure sampler to be jaeger_remote.
-   *
-   * <p>If omitted, ignore.
-   */
-  @JsonProperty("jaeger_remote/development")
-  @Nullable
-  public ExperimentalJaegerRemoteSamplerModel getJaegerRemoteDevelopment() {
-    return jaegerRemoteDevelopment;
-  }
-
-  @JsonProperty("jaeger_remote/development")
-  public SamplerModel withJaegerRemoteDevelopment(
-      ExperimentalJaegerRemoteSamplerModel jaegerRemoteDevelopment) {
-    this.jaegerRemoteDevelopment = jaegerRemoteDevelopment;
-    return this;
-  }
-
   /**
    * Configure sampler to be parent_based.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("parent_based")
+  @JsonProperty(PARENT_BASED)
   @Nullable
   public ParentBasedSamplerModel getParentBased() {
+    if (parentBased == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          PARENT_BASED, extensionProperties, ParentBasedSamplerModel.class);
+    }
     return parentBased;
   }
 
-  @JsonProperty("parent_based")
+  @JsonProperty(PARENT_BASED)
   public SamplerModel withParentBased(ParentBasedSamplerModel parentBased) {
     this.parentBased = parentBased;
     return this;
   }
 
-  /**
-   * Configure sampler to be probability.
-   *
-   * <p>If omitted, ignore.
-   */
-  @JsonProperty("probability/development")
-  @Nullable
-  public ExperimentalProbabilitySamplerModel getProbabilityDevelopment() {
-    return probabilityDevelopment;
-  }
-
-  @JsonProperty("probability/development")
-  public SamplerModel withProbabilityDevelopment(
-      ExperimentalProbabilitySamplerModel probabilityDevelopment) {
-    this.probabilityDevelopment = probabilityDevelopment;
-    return this;
-  }
-
   /**
    * Configure sampler to be trace_id_ratio_based.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("trace_id_ratio_based")
+  @JsonProperty(TRACE_ID_RATIO_BASED)
   @Nullable
   public TraceIdRatioBasedSamplerModel getTraceIdRatioBased() {
+    if (traceIdRatioBased == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          TRACE_ID_RATIO_BASED, extensionProperties, TraceIdRatioBasedSamplerModel.class);
+    }
     return traceIdRatioBased;
   }
 
-  @JsonProperty("trace_id_ratio_based")
+  @JsonProperty(TRACE_ID_RATIO_BASED)
   public SamplerModel withTraceIdRatioBased(TraceIdRatioBasedSamplerModel traceIdRatioBased) {
     this.traceIdRatioBased = traceIdRatioBased;
     return this;
   }
 
   @JsonAnyGetter
-  public Map<String, SamplerPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public SamplerModel withAdditionalProperty(String name, SamplerPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public SamplerModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -181,18 +159,12 @@ public String toString() {
         + alwaysOff
         + ", alwaysOn="
         + alwaysOn
-        + ", compositeDevelopment="
-        + compositeDevelopment
-        + ", jaegerRemoteDevelopment="
-        + jaegerRemoteDevelopment
         + ", parentBased="
         + parentBased
-        + ", probabilityDevelopment="
-        + probabilityDevelopment
         + ", traceIdRatioBased="
         + traceIdRatioBased
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -204,17 +176,11 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.alwaysOn == null) ? 0 : this.alwaysOn.hashCode();
     h *= 1000003;
-    h ^= (this.compositeDevelopment == null) ? 0 : this.compositeDevelopment.hashCode();
-    h *= 1000003;
-    h ^= (this.jaegerRemoteDevelopment == null) ? 0 : this.jaegerRemoteDevelopment.hashCode();
-    h *= 1000003;
     h ^= (this.parentBased == null) ? 0 : this.parentBased.hashCode();
     h *= 1000003;
-    h ^= (this.probabilityDevelopment == null) ? 0 : this.probabilityDevelopment.hashCode();
-    h *= 1000003;
     h ^= (this.traceIdRatioBased == null) ? 0 : this.traceIdRatioBased.hashCode();
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -229,24 +195,15 @@ public boolean equals(@Nullable Object o) {
               ? that.alwaysOff == null
               : this.alwaysOff.equals(that.alwaysOff))
           && (this.alwaysOn == null ? that.alwaysOn == null : this.alwaysOn.equals(that.alwaysOn))
-          && (this.compositeDevelopment == null
-              ? that.compositeDevelopment == null
-              : this.compositeDevelopment.equals(that.compositeDevelopment))
-          && (this.jaegerRemoteDevelopment == null
-              ? that.jaegerRemoteDevelopment == null
-              : this.jaegerRemoteDevelopment.equals(that.jaegerRemoteDevelopment))
           && (this.parentBased == null
               ? that.parentBased == null
               : this.parentBased.equals(that.parentBased))
-          && (this.probabilityDevelopment == null
-              ? that.probabilityDevelopment == null
-              : this.probabilityDevelopment.equals(that.probabilityDevelopment))
           && (this.traceIdRatioBased == null
               ? that.traceIdRatioBased == null
               : this.traceIdRatioBased.equals(that.traceIdRatioBased))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SamplerPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SamplerPropertyModel.java
deleted file mode 100644
index d2a8a40e355..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SamplerPropertyModel.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class SamplerPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public SamplerPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "SamplerPropertyModel{" + "additionalProperties=" + additionalProperties + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof SamplerPropertyModel) {
-      SamplerPropertyModel that = (SamplerPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SimpleLogRecordProcessorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SimpleLogRecordProcessorModel.java
index 3db8f96772c..460ce258379 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SimpleLogRecordProcessorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SimpleLogRecordProcessorModel.java
@@ -5,39 +5,86 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SimpleLogRecordProcessorModel.EXPORTER;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"exporter"})
+@JsonPropertyOrder({EXPORTER})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class SimpleLogRecordProcessorModel {
 
+  static final String EXPORTER = "exporter";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(EXPORTER, LogRecordExporterModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private LogRecordExporterModel exporter;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure exporter.
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   @Nullable
   public LogRecordExporterModel getExporter() {
+    if (exporter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EXPORTER, extensionProperties, LogRecordExporterModel.class);
+    }
     return exporter;
   }
 
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   public SimpleLogRecordProcessorModel withExporter(LogRecordExporterModel exporter) {
     this.exporter = exporter;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public SimpleLogRecordProcessorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
-    return "SimpleLogRecordProcessorModel{" + "exporter=" + exporter + "}";
+    return "SimpleLogRecordProcessorModel{"
+        + "exporter="
+        + exporter
+        + ", extensionProperties="
+        + extensionProperties
+        + "}";
   }
 
   @Override
@@ -45,6 +92,8 @@ public int hashCode() {
     int h = 1;
     h *= 1000003;
     h ^= (this.exporter == null) ? 0 : this.exporter.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -55,7 +104,10 @@ public boolean equals(@Nullable Object o) {
     }
     if (o instanceof SimpleLogRecordProcessorModel) {
       SimpleLogRecordProcessorModel that = (SimpleLogRecordProcessorModel) o;
-      return (this.exporter == null ? that.exporter == null : this.exporter.equals(that.exporter));
+      return (this.exporter == null ? that.exporter == null : this.exporter.equals(that.exporter))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SimpleSpanProcessorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SimpleSpanProcessorModel.java
index 441175aaadc..e502c54428e 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SimpleSpanProcessorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SimpleSpanProcessorModel.java
@@ -5,39 +5,86 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SimpleSpanProcessorModel.EXPORTER;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"exporter"})
+@JsonPropertyOrder({EXPORTER})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class SimpleSpanProcessorModel {
 
+  static final String EXPORTER = "exporter";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(EXPORTER, SpanExporterModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private SpanExporterModel exporter;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure exporter.
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   @Nullable
   public SpanExporterModel getExporter() {
+    if (exporter == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EXPORTER, extensionProperties, SpanExporterModel.class);
+    }
     return exporter;
   }
 
-  @JsonProperty("exporter")
+  @JsonProperty(EXPORTER)
   public SimpleSpanProcessorModel withExporter(SpanExporterModel exporter) {
     this.exporter = exporter;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public SimpleSpanProcessorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
-    return "SimpleSpanProcessorModel{" + "exporter=" + exporter + "}";
+    return "SimpleSpanProcessorModel{"
+        + "exporter="
+        + exporter
+        + ", extensionProperties="
+        + extensionProperties
+        + "}";
   }
 
   @Override
@@ -45,6 +92,8 @@ public int hashCode() {
     int h = 1;
     h *= 1000003;
     h ^= (this.exporter == null) ? 0 : this.exporter.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -55,7 +104,10 @@ public boolean equals(@Nullable Object o) {
     }
     if (o instanceof SimpleSpanProcessorModel) {
       SimpleSpanProcessorModel that = (SimpleSpanProcessorModel) o;
-      return (this.exporter == null ? that.exporter == null : this.exporter.equals(that.exporter));
+      return (this.exporter == null ? that.exporter == null : this.exporter.equals(that.exporter))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanExporterModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanExporterModel.java
index 20aec6f4cf5..a19d96e0af7 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanExporterModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanExporterModel.java
@@ -5,41 +5,64 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanExporterModel.CONSOLE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanExporterModel.OTLP_GRPC;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanExporterModel.OTLP_HTTP;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.SpanExporterModelAccessor.EXPERIMENTAL_PROPERTIES;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalOtlpFileExporterModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"otlp_http", "otlp_grpc", "otlp_file/development", "console"})
+@JsonPropertyOrder({OTLP_HTTP, OTLP_GRPC, CONSOLE})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class SpanExporterModel {
 
+  static final String OTLP_HTTP = "otlp_http";
+  static final String OTLP_GRPC = "otlp_grpc";
+  static final String CONSOLE = "console";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(OTLP_HTTP, OtlpHttpExporterModel.class);
+    STABLE_PROPERTIES.put(OTLP_GRPC, OtlpGrpcExporterModel.class);
+    STABLE_PROPERTIES.put(CONSOLE, ConsoleExporterModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
   @Nullable private OtlpHttpExporterModel otlpHttp;
   @Nullable private OtlpGrpcExporterModel otlpGrpc;
-  @Nullable private ExperimentalOtlpFileExporterModel otlpFileDevelopment;
   @Nullable private ConsoleExporterModel console;
-  private Map<String, SpanExporterPropertyModel> additionalProperties =
-      new LinkedHashMap<String, SpanExporterPropertyModel>();
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure exporter to be OTLP with HTTP transport.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("otlp_http")
+  @JsonProperty(OTLP_HTTP)
   @Nullable
   public OtlpHttpExporterModel getOtlpHttp() {
+    if (otlpHttp == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OTLP_HTTP, extensionProperties, OtlpHttpExporterModel.class);
+    }
     return otlpHttp;
   }
 
-  @JsonProperty("otlp_http")
+  @JsonProperty(OTLP_HTTP)
   public SpanExporterModel withOtlpHttp(OtlpHttpExporterModel otlpHttp) {
     this.otlpHttp = otlpHttp;
     return this;
@@ -50,61 +73,57 @@ public SpanExporterModel withOtlpHttp(OtlpHttpExporterModel otlpHttp) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("otlp_grpc")
+  @JsonProperty(OTLP_GRPC)
   @Nullable
   public OtlpGrpcExporterModel getOtlpGrpc() {
+    if (otlpGrpc == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          OTLP_GRPC, extensionProperties, OtlpGrpcExporterModel.class);
+    }
     return otlpGrpc;
   }
 
-  @JsonProperty("otlp_grpc")
+  @JsonProperty(OTLP_GRPC)
   public SpanExporterModel withOtlpGrpc(OtlpGrpcExporterModel otlpGrpc) {
     this.otlpGrpc = otlpGrpc;
     return this;
   }
 
-  /**
-   * Configure exporter to be OTLP with file transport.
-   *
-   * <p>If omitted, ignore.
-   */
-  @JsonProperty("otlp_file/development")
-  @Nullable
-  public ExperimentalOtlpFileExporterModel getOtlpFileDevelopment() {
-    return otlpFileDevelopment;
-  }
-
-  @JsonProperty("otlp_file/development")
-  public SpanExporterModel withOtlpFileDevelopment(
-      ExperimentalOtlpFileExporterModel otlpFileDevelopment) {
-    this.otlpFileDevelopment = otlpFileDevelopment;
-    return this;
-  }
-
   /**
    * Configure exporter to be console.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("console")
+  @JsonProperty(CONSOLE)
   @Nullable
   public ConsoleExporterModel getConsole() {
+    if (console == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          CONSOLE, extensionProperties, ConsoleExporterModel.class);
+    }
     return console;
   }
 
-  @JsonProperty("console")
+  @JsonProperty(CONSOLE)
   public SpanExporterModel withConsole(ConsoleExporterModel console) {
     this.console = console;
     return this;
   }
 
   @JsonAnyGetter
-  public Map<String, SpanExporterPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public SpanExporterModel withAdditionalProperty(String name, SpanExporterPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public SpanExporterModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -115,12 +134,10 @@ public String toString() {
         + otlpHttp
         + ", otlpGrpc="
         + otlpGrpc
-        + ", otlpFileDevelopment="
-        + otlpFileDevelopment
         + ", console="
         + console
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -132,11 +149,9 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.otlpGrpc == null) ? 0 : this.otlpGrpc.hashCode();
     h *= 1000003;
-    h ^= (this.otlpFileDevelopment == null) ? 0 : this.otlpFileDevelopment.hashCode();
-    h *= 1000003;
     h ^= (this.console == null) ? 0 : this.console.hashCode();
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -149,13 +164,10 @@ public boolean equals(@Nullable Object o) {
       SpanExporterModel that = (SpanExporterModel) o;
       return (this.otlpHttp == null ? that.otlpHttp == null : this.otlpHttp.equals(that.otlpHttp))
           && (this.otlpGrpc == null ? that.otlpGrpc == null : this.otlpGrpc.equals(that.otlpGrpc))
-          && (this.otlpFileDevelopment == null
-              ? that.otlpFileDevelopment == null
-              : this.otlpFileDevelopment.equals(that.otlpFileDevelopment))
           && (this.console == null ? that.console == null : this.console.equals(that.console))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanExporterPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanExporterPropertyModel.java
deleted file mode 100644
index a2e323f35a3..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanExporterPropertyModel.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class SpanExporterPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public SpanExporterPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "SpanExporterPropertyModel{" + "additionalProperties=" + additionalProperties + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof SpanExporterPropertyModel) {
-      SpanExporterPropertyModel that = (SpanExporterPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanLimitsModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanLimitsModel.java
index 3acd087605c..285f702270f 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanLimitsModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanLimitsModel.java
@@ -5,30 +5,66 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanLimitsModel.ATTRIBUTE_COUNT_LIMIT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanLimitsModel.ATTRIBUTE_VALUE_LENGTH_LIMIT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanLimitsModel.EVENT_ATTRIBUTE_COUNT_LIMIT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanLimitsModel.EVENT_COUNT_LIMIT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanLimitsModel.LINK_ATTRIBUTE_COUNT_LIMIT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanLimitsModel.LINK_COUNT_LIMIT;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "attribute_value_length_limit",
-  "attribute_count_limit",
-  "event_count_limit",
-  "link_count_limit",
-  "event_attribute_count_limit",
-  "link_attribute_count_limit"
+  ATTRIBUTE_VALUE_LENGTH_LIMIT,
+  ATTRIBUTE_COUNT_LIMIT,
+  EVENT_COUNT_LIMIT,
+  LINK_COUNT_LIMIT,
+  EVENT_ATTRIBUTE_COUNT_LIMIT,
+  LINK_ATTRIBUTE_COUNT_LIMIT
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class SpanLimitsModel {
 
+  static final String ATTRIBUTE_VALUE_LENGTH_LIMIT = "attribute_value_length_limit";
+  static final String ATTRIBUTE_COUNT_LIMIT = "attribute_count_limit";
+  static final String EVENT_COUNT_LIMIT = "event_count_limit";
+  static final String LINK_COUNT_LIMIT = "link_count_limit";
+  static final String EVENT_ATTRIBUTE_COUNT_LIMIT = "event_attribute_count_limit";
+  static final String LINK_ATTRIBUTE_COUNT_LIMIT = "link_attribute_count_limit";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(ATTRIBUTE_VALUE_LENGTH_LIMIT, Integer.class);
+    STABLE_PROPERTIES.put(ATTRIBUTE_COUNT_LIMIT, Integer.class);
+    STABLE_PROPERTIES.put(EVENT_COUNT_LIMIT, Integer.class);
+    STABLE_PROPERTIES.put(LINK_COUNT_LIMIT, Integer.class);
+    STABLE_PROPERTIES.put(EVENT_ATTRIBUTE_COUNT_LIMIT, Integer.class);
+    STABLE_PROPERTIES.put(LINK_ATTRIBUTE_COUNT_LIMIT, Integer.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private Integer attributeValueLengthLimit;
   @Nullable private Integer attributeCountLimit;
   @Nullable private Integer eventCountLimit;
   @Nullable private Integer linkCountLimit;
   @Nullable private Integer eventAttributeCountLimit;
   @Nullable private Integer linkAttributeCountLimit;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure max attribute value size. Overrides .attribute_limits.attribute_value_length_limit.
@@ -37,13 +73,17 @@ public class SpanLimitsModel {
    *
    * <p>If omitted or null, there is no limit.
    */
-  @JsonProperty("attribute_value_length_limit")
+  @JsonProperty(ATTRIBUTE_VALUE_LENGTH_LIMIT)
   @Nullable
   public Integer getAttributeValueLengthLimit() {
+    if (attributeValueLengthLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ATTRIBUTE_VALUE_LENGTH_LIMIT, extensionProperties, Integer.class);
+    }
     return attributeValueLengthLimit;
   }
 
-  @JsonProperty("attribute_value_length_limit")
+  @JsonProperty(ATTRIBUTE_VALUE_LENGTH_LIMIT)
   public SpanLimitsModel withAttributeValueLengthLimit(Integer attributeValueLengthLimit) {
     this.attributeValueLengthLimit = attributeValueLengthLimit;
     return this;
@@ -56,13 +96,17 @@ public SpanLimitsModel withAttributeValueLengthLimit(Integer attributeValueLengt
    *
    * <p>If omitted or null, 128 is used.
    */
-  @JsonProperty("attribute_count_limit")
+  @JsonProperty(ATTRIBUTE_COUNT_LIMIT)
   @Nullable
   public Integer getAttributeCountLimit() {
+    if (attributeCountLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ATTRIBUTE_COUNT_LIMIT, extensionProperties, Integer.class);
+    }
     return attributeCountLimit;
   }
 
-  @JsonProperty("attribute_count_limit")
+  @JsonProperty(ATTRIBUTE_COUNT_LIMIT)
   public SpanLimitsModel withAttributeCountLimit(Integer attributeCountLimit) {
     this.attributeCountLimit = attributeCountLimit;
     return this;
@@ -75,13 +119,17 @@ public SpanLimitsModel withAttributeCountLimit(Integer attributeCountLimit) {
    *
    * <p>If omitted or null, 128 is used.
    */
-  @JsonProperty("event_count_limit")
+  @JsonProperty(EVENT_COUNT_LIMIT)
   @Nullable
   public Integer getEventCountLimit() {
+    if (eventCountLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EVENT_COUNT_LIMIT, extensionProperties, Integer.class);
+    }
     return eventCountLimit;
   }
 
-  @JsonProperty("event_count_limit")
+  @JsonProperty(EVENT_COUNT_LIMIT)
   public SpanLimitsModel withEventCountLimit(Integer eventCountLimit) {
     this.eventCountLimit = eventCountLimit;
     return this;
@@ -94,13 +142,17 @@ public SpanLimitsModel withEventCountLimit(Integer eventCountLimit) {
    *
    * <p>If omitted or null, 128 is used.
    */
-  @JsonProperty("link_count_limit")
+  @JsonProperty(LINK_COUNT_LIMIT)
   @Nullable
   public Integer getLinkCountLimit() {
+    if (linkCountLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          LINK_COUNT_LIMIT, extensionProperties, Integer.class);
+    }
     return linkCountLimit;
   }
 
-  @JsonProperty("link_count_limit")
+  @JsonProperty(LINK_COUNT_LIMIT)
   public SpanLimitsModel withLinkCountLimit(Integer linkCountLimit) {
     this.linkCountLimit = linkCountLimit;
     return this;
@@ -113,13 +165,17 @@ public SpanLimitsModel withLinkCountLimit(Integer linkCountLimit) {
    *
    * <p>If omitted or null, 128 is used.
    */
-  @JsonProperty("event_attribute_count_limit")
+  @JsonProperty(EVENT_ATTRIBUTE_COUNT_LIMIT)
   @Nullable
   public Integer getEventAttributeCountLimit() {
+    if (eventAttributeCountLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          EVENT_ATTRIBUTE_COUNT_LIMIT, extensionProperties, Integer.class);
+    }
     return eventAttributeCountLimit;
   }
 
-  @JsonProperty("event_attribute_count_limit")
+  @JsonProperty(EVENT_ATTRIBUTE_COUNT_LIMIT)
   public SpanLimitsModel withEventAttributeCountLimit(Integer eventAttributeCountLimit) {
     this.eventAttributeCountLimit = eventAttributeCountLimit;
     return this;
@@ -132,18 +188,39 @@ public SpanLimitsModel withEventAttributeCountLimit(Integer eventAttributeCountL
    *
    * <p>If omitted or null, 128 is used.
    */
-  @JsonProperty("link_attribute_count_limit")
+  @JsonProperty(LINK_ATTRIBUTE_COUNT_LIMIT)
   @Nullable
   public Integer getLinkAttributeCountLimit() {
+    if (linkAttributeCountLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          LINK_ATTRIBUTE_COUNT_LIMIT, extensionProperties, Integer.class);
+    }
     return linkAttributeCountLimit;
   }
 
-  @JsonProperty("link_attribute_count_limit")
+  @JsonProperty(LINK_ATTRIBUTE_COUNT_LIMIT)
   public SpanLimitsModel withLinkAttributeCountLimit(Integer linkAttributeCountLimit) {
     this.linkAttributeCountLimit = linkAttributeCountLimit;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public SpanLimitsModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "SpanLimitsModel{"
@@ -159,6 +236,8 @@ public String toString() {
         + eventAttributeCountLimit
         + ", linkAttributeCountLimit="
         + linkAttributeCountLimit
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -177,6 +256,8 @@ public int hashCode() {
     h ^= (this.eventAttributeCountLimit == null) ? 0 : this.eventAttributeCountLimit.hashCode();
     h *= 1000003;
     h ^= (this.linkAttributeCountLimit == null) ? 0 : this.linkAttributeCountLimit.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -204,7 +285,10 @@ public boolean equals(@Nullable Object o) {
               : this.eventAttributeCountLimit.equals(that.eventAttributeCountLimit))
           && (this.linkAttributeCountLimit == null
               ? that.linkAttributeCountLimit == null
-              : this.linkAttributeCountLimit.equals(that.linkAttributeCountLimit));
+              : this.linkAttributeCountLimit.equals(that.linkAttributeCountLimit))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanProcessorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanProcessorModel.java
index 1a50b6bd02e..2094ba22a5e 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanProcessorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanProcessorModel.java
@@ -5,38 +5,60 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanProcessorModel.BATCH;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanProcessorModel.SIMPLE;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"batch", "simple"})
+@JsonPropertyOrder({BATCH, SIMPLE})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class SpanProcessorModel {
 
+  static final String BATCH = "batch";
+  static final String SIMPLE = "simple";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(BATCH, BatchSpanProcessorModel.class);
+    STABLE_PROPERTIES.put(SIMPLE, SimpleSpanProcessorModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
   @Nullable private BatchSpanProcessorModel batch;
   @Nullable private SimpleSpanProcessorModel simple;
-  private Map<String, SpanProcessorPropertyModel> additionalProperties =
-      new LinkedHashMap<String, SpanProcessorPropertyModel>();
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure a batch span processor.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("batch")
+  @JsonProperty(BATCH)
   @Nullable
   public BatchSpanProcessorModel getBatch() {
+    if (batch == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          BATCH, extensionProperties, BatchSpanProcessorModel.class);
+    }
     return batch;
   }
 
-  @JsonProperty("batch")
+  @JsonProperty(BATCH)
   public SpanProcessorModel withBatch(BatchSpanProcessorModel batch) {
     this.batch = batch;
     return this;
@@ -47,26 +69,36 @@ public SpanProcessorModel withBatch(BatchSpanProcessorModel batch) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("simple")
+  @JsonProperty(SIMPLE)
   @Nullable
   public SimpleSpanProcessorModel getSimple() {
+    if (simple == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          SIMPLE, extensionProperties, SimpleSpanProcessorModel.class);
+    }
     return simple;
   }
 
-  @JsonProperty("simple")
+  @JsonProperty(SIMPLE)
   public SpanProcessorModel withSimple(SimpleSpanProcessorModel simple) {
     this.simple = simple;
     return this;
   }
 
   @JsonAnyGetter
-  public Map<String, SpanProcessorPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public SpanProcessorModel withAdditionalProperty(String name, SpanProcessorPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public SpanProcessorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -77,8 +109,8 @@ public String toString() {
         + batch
         + ", simple="
         + simple
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -90,7 +122,7 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.simple == null) ? 0 : this.simple.hashCode();
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -103,9 +135,9 @@ public boolean equals(@Nullable Object o) {
       SpanProcessorModel that = (SpanProcessorModel) o;
       return (this.batch == null ? that.batch == null : this.batch.equals(that.batch))
           && (this.simple == null ? that.simple == null : this.simple.equals(that.simple))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanProcessorPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanProcessorPropertyModel.java
deleted file mode 100644
index 4dbcfc9624e..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/SpanProcessorPropertyModel.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class SpanProcessorPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public SpanProcessorPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "SpanProcessorPropertyModel{" + "additionalProperties=" + additionalProperties + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof SpanProcessorPropertyModel) {
-      SpanProcessorPropertyModel that = (SpanProcessorPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TextMapPropagatorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TextMapPropagatorModel.java
index 5e36c249962..54af1a79b02 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TextMapPropagatorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TextMapPropagatorModel.java
@@ -5,40 +5,68 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TextMapPropagatorModel.BAGGAGE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TextMapPropagatorModel.B_3;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TextMapPropagatorModel.B_3_MULTI;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TextMapPropagatorModel.TRACECONTEXT;
+
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"tracecontext", "baggage", "b3", "b3multi"})
+@JsonPropertyOrder({TRACECONTEXT, BAGGAGE, B_3, B_3_MULTI})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class TextMapPropagatorModel {
 
+  static final String TRACECONTEXT = "tracecontext";
+  static final String BAGGAGE = "baggage";
+  static final String B_3 = "b3";
+  static final String B_3_MULTI = "b3multi";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(TRACECONTEXT, TraceContextPropagatorModel.class);
+    STABLE_PROPERTIES.put(BAGGAGE, BaggagePropagatorModel.class);
+    STABLE_PROPERTIES.put(B_3, B3PropagatorModel.class);
+    STABLE_PROPERTIES.put(B_3_MULTI, B3MultiPropagatorModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = true;
+
   @Nullable private TraceContextPropagatorModel tracecontext;
   @Nullable private BaggagePropagatorModel baggage;
   @Nullable private B3PropagatorModel b3;
   @Nullable private B3MultiPropagatorModel b3multi;
-  private Map<String, TextMapPropagatorPropertyModel> additionalProperties =
-      new LinkedHashMap<String, TextMapPropagatorPropertyModel>();
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Include the w3c trace context propagator.
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("tracecontext")
+  @JsonProperty(TRACECONTEXT)
   @Nullable
   public TraceContextPropagatorModel getTracecontext() {
+    if (tracecontext == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          TRACECONTEXT, extensionProperties, TraceContextPropagatorModel.class);
+    }
     return tracecontext;
   }
 
-  @JsonProperty("tracecontext")
+  @JsonProperty(TRACECONTEXT)
   public TextMapPropagatorModel withTracecontext(TraceContextPropagatorModel tracecontext) {
     this.tracecontext = tracecontext;
     return this;
@@ -49,13 +77,17 @@ public TextMapPropagatorModel withTracecontext(TraceContextPropagatorModel trace
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("baggage")
+  @JsonProperty(BAGGAGE)
   @Nullable
   public BaggagePropagatorModel getBaggage() {
+    if (baggage == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          BAGGAGE, extensionProperties, BaggagePropagatorModel.class);
+    }
     return baggage;
   }
 
-  @JsonProperty("baggage")
+  @JsonProperty(BAGGAGE)
   public TextMapPropagatorModel withBaggage(BaggagePropagatorModel baggage) {
     this.baggage = baggage;
     return this;
@@ -66,13 +98,16 @@ public TextMapPropagatorModel withBaggage(BaggagePropagatorModel baggage) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("b3")
+  @JsonProperty(B_3)
   @Nullable
   public B3PropagatorModel getB3() {
+    if (b3 == null) {
+      return ExtensionPropertyUtil.getGraduated(B_3, extensionProperties, B3PropagatorModel.class);
+    }
     return b3;
   }
 
-  @JsonProperty("b3")
+  @JsonProperty(B_3)
   public TextMapPropagatorModel withB3(B3PropagatorModel b3) {
     this.b3 = b3;
     return this;
@@ -83,27 +118,36 @@ public TextMapPropagatorModel withB3(B3PropagatorModel b3) {
    *
    * <p>If omitted, ignore.
    */
-  @JsonProperty("b3multi")
+  @JsonProperty(B_3_MULTI)
   @Nullable
   public B3MultiPropagatorModel getB3multi() {
+    if (b3multi == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          B_3_MULTI, extensionProperties, B3MultiPropagatorModel.class);
+    }
     return b3multi;
   }
 
-  @JsonProperty("b3multi")
+  @JsonProperty(B_3_MULTI)
   public TextMapPropagatorModel withB3multi(B3MultiPropagatorModel b3multi) {
     this.b3multi = b3multi;
     return this;
   }
 
   @JsonAnyGetter
-  public Map<String, TextMapPropagatorPropertyModel> getAdditionalProperties() {
-    return this.additionalProperties;
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
   @JsonAnySetter
-  public TextMapPropagatorModel withAdditionalProperty(
-      String name, TextMapPropagatorPropertyModel value) {
-    this.additionalProperties.put(name, value);
+  public TextMapPropagatorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -118,8 +162,8 @@ public String toString() {
         + b3
         + ", b3multi="
         + b3multi
-        + ", additionalProperties="
-        + additionalProperties
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -135,7 +179,7 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.b3multi == null) ? 0 : this.b3multi.hashCode();
     h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -152,9 +196,9 @@ public boolean equals(@Nullable Object o) {
           && (this.baggage == null ? that.baggage == null : this.baggage.equals(that.baggage))
           && (this.b3 == null ? that.b3 == null : this.b3.equals(that.b3))
           && (this.b3multi == null ? that.b3multi == null : this.b3multi.equals(that.b3multi))
-          && (this.additionalProperties == null
-              ? that.additionalProperties == null
-              : this.additionalProperties.equals(that.additionalProperties));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TextMapPropagatorPropertyModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TextMapPropagatorPropertyModel.java
deleted file mode 100644
index 1cc7703b715..00000000000
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TextMapPropagatorPropertyModel.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
-
-import com.fasterxml.jackson.annotation.JsonAnyGetter;
-import com.fasterxml.jackson.annotation.JsonAnySetter;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import javax.annotation.Generated;
-import javax.annotation.Nullable;
-
-@JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({})
-@Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
-public class TextMapPropagatorPropertyModel {
-
-  private Map<String, Object> additionalProperties = new LinkedHashMap<String, Object>();
-
-  @JsonAnyGetter
-  public Map<String, Object> getAdditionalProperties() {
-    return this.additionalProperties;
-  }
-
-  @JsonAnySetter
-  public TextMapPropagatorPropertyModel withAdditionalProperty(String name, Object value) {
-    this.additionalProperties.put(name, value);
-    return this;
-  }
-
-  @Override
-  public String toString() {
-    return "TextMapPropagatorPropertyModel{" + "additionalProperties=" + additionalProperties + "}";
-  }
-
-  @Override
-  public int hashCode() {
-    int h = 1;
-    h *= 1000003;
-    h ^= (this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode();
-    return h;
-  }
-
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (o == this) {
-      return true;
-    }
-    if (o instanceof TextMapPropagatorPropertyModel) {
-      TextMapPropagatorPropertyModel that = (TextMapPropagatorPropertyModel) o;
-      return (this.additionalProperties == null
-          ? that.additionalProperties == null
-          : this.additionalProperties.equals(that.additionalProperties));
-    }
-    return false;
-  }
-}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TraceIdRatioBasedSamplerModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TraceIdRatioBasedSamplerModel.java
index f03037a5291..88f6589b249 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TraceIdRatioBasedSamplerModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TraceIdRatioBasedSamplerModel.java
@@ -5,39 +5,85 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TraceIdRatioBasedSamplerModel.RATIO;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"ratio"})
+@JsonPropertyOrder({RATIO})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class TraceIdRatioBasedSamplerModel {
 
+  static final String RATIO = "ratio";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(RATIO, Double.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private Double ratio;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure trace_id_ratio.
    *
    * <p>If omitted or null, 1.0 is used.
    */
-  @JsonProperty("ratio")
+  @JsonProperty(RATIO)
   @Nullable
   public Double getRatio() {
+    if (ratio == null) {
+      return ExtensionPropertyUtil.getGraduated(RATIO, extensionProperties, Double.class);
+    }
     return ratio;
   }
 
-  @JsonProperty("ratio")
+  @JsonProperty(RATIO)
   public TraceIdRatioBasedSamplerModel withRatio(Double ratio) {
     this.ratio = ratio;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public TraceIdRatioBasedSamplerModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
-    return "TraceIdRatioBasedSamplerModel{" + "ratio=" + ratio + "}";
+    return "TraceIdRatioBasedSamplerModel{"
+        + "ratio="
+        + ratio
+        + ", extensionProperties="
+        + extensionProperties
+        + "}";
   }
 
   @Override
@@ -45,6 +91,8 @@ public int hashCode() {
     int h = 1;
     h *= 1000003;
     h ^= (this.ratio == null) ? 0 : this.ratio.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -55,7 +103,10 @@ public boolean equals(@Nullable Object o) {
     }
     if (o instanceof TraceIdRatioBasedSamplerModel) {
       TraceIdRatioBasedSamplerModel that = (TraceIdRatioBasedSamplerModel) o;
-      return (this.ratio == null ? that.ratio == null : this.ratio.equals(that.ratio));
+      return (this.ratio == null ? that.ratio == null : this.ratio.equals(that.ratio))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TracerProviderModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TracerProviderModel.java
index 10f7d747775..36f2c772d79 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TracerProviderModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/TracerProviderModel.java
@@ -5,43 +5,64 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TracerProviderModel.ID_GENERATOR;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TracerProviderModel.LIMITS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TracerProviderModel.PROCESSORS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TracerProviderModel.SAMPLER;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.TracerProviderModelAccessor.EXPERIMENTAL_PROPERTIES;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalTracerConfiguratorModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({
-  "processors",
-  "limits",
-  "sampler",
-  "id_generator",
-  "tracer_configurator/development"
-})
+@JsonPropertyOrder({PROCESSORS, LIMITS, SAMPLER, ID_GENERATOR})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class TracerProviderModel {
 
+  static final String PROCESSORS = "processors";
+  static final String LIMITS = "limits";
+  static final String SAMPLER = "sampler";
+  static final String ID_GENERATOR = "id_generator";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(LIMITS, SpanLimitsModel.class);
+    STABLE_PROPERTIES.put(SAMPLER, SamplerModel.class);
+    STABLE_PROPERTIES.put(ID_GENERATOR, IdGeneratorModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private List<SpanProcessorModel> processors;
   @Nullable private SpanLimitsModel limits;
   @Nullable private SamplerModel sampler;
   @Nullable private IdGeneratorModel idGenerator;
-  @Nullable private ExperimentalTracerConfiguratorModel tracerConfiguratorDevelopment;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure span processors.
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("processors")
+  @JsonProperty(PROCESSORS)
   @Nullable
   public List<SpanProcessorModel> getProcessors() {
     return processors;
   }
 
-  @JsonProperty("processors")
+  @JsonProperty(PROCESSORS)
   public TracerProviderModel withProcessors(List<SpanProcessorModel> processors) {
     this.processors = processors;
     return this;
@@ -52,13 +73,16 @@ public TracerProviderModel withProcessors(List<SpanProcessorModel> processors) {
    *
    * <p>If omitted, default values as described in SpanLimits are used.
    */
-  @JsonProperty("limits")
+  @JsonProperty(LIMITS)
   @Nullable
   public SpanLimitsModel getLimits() {
+    if (limits == null) {
+      return ExtensionPropertyUtil.getGraduated(LIMITS, extensionProperties, SpanLimitsModel.class);
+    }
     return limits;
   }
 
-  @JsonProperty("limits")
+  @JsonProperty(LIMITS)
   public TracerProviderModel withLimits(SpanLimitsModel limits) {
     this.limits = limits;
     return this;
@@ -69,13 +93,16 @@ public TracerProviderModel withLimits(SpanLimitsModel limits) {
    *
    * <p>If omitted, parent based sampler with a root of always_on is used.
    */
-  @JsonProperty("sampler")
+  @JsonProperty(SAMPLER)
   @Nullable
   public SamplerModel getSampler() {
+    if (sampler == null) {
+      return ExtensionPropertyUtil.getGraduated(SAMPLER, extensionProperties, SamplerModel.class);
+    }
     return sampler;
   }
 
-  @JsonProperty("sampler")
+  @JsonProperty(SAMPLER)
   public TracerProviderModel withSampler(SamplerModel sampler) {
     this.sampler = sampler;
     return this;
@@ -86,33 +113,36 @@ public TracerProviderModel withSampler(SamplerModel sampler) {
    *
    * <p>If omitted, RandomIdGenerator is used.
    */
-  @JsonProperty("id_generator")
+  @JsonProperty(ID_GENERATOR)
   @Nullable
   public IdGeneratorModel getIdGenerator() {
+    if (idGenerator == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ID_GENERATOR, extensionProperties, IdGeneratorModel.class);
+    }
     return idGenerator;
   }
 
-  @JsonProperty("id_generator")
+  @JsonProperty(ID_GENERATOR)
   public TracerProviderModel withIdGenerator(IdGeneratorModel idGenerator) {
     this.idGenerator = idGenerator;
     return this;
   }
 
-  /**
-   * Configure tracers.
-   *
-   * <p>If omitted, all tracers use default values as described in ExperimentalTracerConfig.
-   */
-  @JsonProperty("tracer_configurator/development")
-  @Nullable
-  public ExperimentalTracerConfiguratorModel getTracerConfiguratorDevelopment() {
-    return tracerConfiguratorDevelopment;
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
   }
 
-  @JsonProperty("tracer_configurator/development")
-  public TracerProviderModel withTracerConfiguratorDevelopment(
-      ExperimentalTracerConfiguratorModel tracerConfiguratorDevelopment) {
-    this.tracerConfiguratorDevelopment = tracerConfiguratorDevelopment;
+  @JsonAnySetter
+  public TracerProviderModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        EXPERIMENTAL_PROPERTIES,
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
     return this;
   }
 
@@ -127,8 +157,8 @@ public String toString() {
         + sampler
         + ", idGenerator="
         + idGenerator
-        + ", tracerConfiguratorDevelopment="
-        + tracerConfiguratorDevelopment
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -144,10 +174,7 @@ public int hashCode() {
     h *= 1000003;
     h ^= (this.idGenerator == null) ? 0 : this.idGenerator.hashCode();
     h *= 1000003;
-    h ^=
-        (this.tracerConfiguratorDevelopment == null)
-            ? 0
-            : this.tracerConfiguratorDevelopment.hashCode();
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -166,9 +193,9 @@ public boolean equals(@Nullable Object o) {
           && (this.idGenerator == null
               ? that.idGenerator == null
               : this.idGenerator.equals(that.idGenerator))
-          && (this.tracerConfiguratorDevelopment == null
-              ? that.tracerConfiguratorDevelopment == null
-              : this.tracerConfiguratorDevelopment.equals(that.tracerConfiguratorDevelopment));
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewModel.java
index 9b1876d1cb0..9f5366b607f 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewModel.java
@@ -5,19 +5,43 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewModel.SELECTOR;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewModel.STREAM;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({"selector", "stream"})
+@JsonPropertyOrder({SELECTOR, STREAM})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class ViewModel {
 
+  static final String SELECTOR = "selector";
+  static final String STREAM = "stream";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(SELECTOR, ViewSelectorModel.class);
+    STABLE_PROPERTIES.put(STREAM, ViewStreamModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private ViewSelectorModel selector;
   @Nullable private ViewStreamModel stream;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure view selector.
@@ -27,13 +51,17 @@ public class ViewModel {
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("selector")
+  @JsonProperty(SELECTOR)
   @Nullable
   public ViewSelectorModel getSelector() {
+    if (selector == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          SELECTOR, extensionProperties, ViewSelectorModel.class);
+    }
     return selector;
   }
 
-  @JsonProperty("selector")
+  @JsonProperty(SELECTOR)
   public ViewModel withSelector(ViewSelectorModel selector) {
     this.selector = selector;
     return this;
@@ -44,21 +72,48 @@ public ViewModel withSelector(ViewSelectorModel selector) {
    *
    * <p>Property is required and must be non-null.
    */
-  @JsonProperty("stream")
+  @JsonProperty(STREAM)
   @Nullable
   public ViewStreamModel getStream() {
+    if (stream == null) {
+      return ExtensionPropertyUtil.getGraduated(STREAM, extensionProperties, ViewStreamModel.class);
+    }
     return stream;
   }
 
-  @JsonProperty("stream")
+  @JsonProperty(STREAM)
   public ViewModel withStream(ViewStreamModel stream) {
     this.stream = stream;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public ViewModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
-    return "ViewModel{" + "selector=" + selector + ", stream=" + stream + "}";
+    return "ViewModel{"
+        + "selector="
+        + selector
+        + ", stream="
+        + stream
+        + ", extensionProperties="
+        + extensionProperties
+        + "}";
   }
 
   @Override
@@ -68,6 +123,8 @@ public int hashCode() {
     h ^= (this.selector == null) ? 0 : this.selector.hashCode();
     h *= 1000003;
     h ^= (this.stream == null) ? 0 : this.stream.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -79,7 +136,10 @@ public boolean equals(@Nullable Object o) {
     if (o instanceof ViewModel) {
       ViewModel that = (ViewModel) o;
       return (this.selector == null ? that.selector == null : this.selector.equals(that.selector))
-          && (this.stream == null ? that.stream == null : this.stream.equals(that.stream));
+          && (this.stream == null ? that.stream == null : this.stream.equals(that.stream))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewSelectorModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewSelectorModel.java
index 18cb4a59335..925ab1b059f 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewSelectorModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewSelectorModel.java
@@ -5,43 +5,82 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewSelectorModel.INSTRUMENT_NAME;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewSelectorModel.INSTRUMENT_TYPE;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewSelectorModel.METER_NAME;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewSelectorModel.METER_SCHEMA_URL;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewSelectorModel.METER_VERSION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewSelectorModel.UNIT;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonPropertyOrder({
-  "instrument_name",
-  "instrument_type",
-  "unit",
-  "meter_name",
-  "meter_version",
-  "meter_schema_url"
+  INSTRUMENT_NAME,
+  INSTRUMENT_TYPE,
+  UNIT,
+  METER_NAME,
+  METER_VERSION,
+  METER_SCHEMA_URL
 })
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class ViewSelectorModel {
 
+  static final String INSTRUMENT_NAME = "instrument_name";
+  static final String INSTRUMENT_TYPE = "instrument_type";
+  static final String UNIT = "unit";
+  static final String METER_NAME = "meter_name";
+  static final String METER_VERSION = "meter_version";
+  static final String METER_SCHEMA_URL = "meter_schema_url";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(INSTRUMENT_NAME, String.class);
+    STABLE_PROPERTIES.put(INSTRUMENT_TYPE, InstrumentTypeModel.class);
+    STABLE_PROPERTIES.put(UNIT, String.class);
+    STABLE_PROPERTIES.put(METER_NAME, String.class);
+    STABLE_PROPERTIES.put(METER_VERSION, String.class);
+    STABLE_PROPERTIES.put(METER_SCHEMA_URL, String.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String instrumentName;
   @Nullable private InstrumentTypeModel instrumentType;
   @Nullable private String unit;
   @Nullable private String meterName;
   @Nullable private String meterVersion;
   @Nullable private String meterSchemaUrl;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure instrument name selection criteria.
    *
    * <p>If omitted or null, all instrument names match.
    */
-  @JsonProperty("instrument_name")
+  @JsonProperty(INSTRUMENT_NAME)
   @Nullable
   public String getInstrumentName() {
+    if (instrumentName == null) {
+      return ExtensionPropertyUtil.getGraduated(INSTRUMENT_NAME, extensionProperties, String.class);
+    }
     return instrumentName;
   }
 
-  @JsonProperty("instrument_name")
+  @JsonProperty(INSTRUMENT_NAME)
   public ViewSelectorModel withInstrumentName(String instrumentName) {
     this.instrumentName = instrumentName;
     return this;
@@ -68,13 +107,17 @@ public ViewSelectorModel withInstrumentName(String instrumentName) {
    *
    * <p>If omitted, all instrument types match.
    */
-  @JsonProperty("instrument_type")
+  @JsonProperty(INSTRUMENT_TYPE)
   @Nullable
   public InstrumentTypeModel getInstrumentType() {
+    if (instrumentType == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          INSTRUMENT_TYPE, extensionProperties, InstrumentTypeModel.class);
+    }
     return instrumentType;
   }
 
-  @JsonProperty("instrument_type")
+  @JsonProperty(INSTRUMENT_TYPE)
   public ViewSelectorModel withInstrumentType(InstrumentTypeModel instrumentType) {
     this.instrumentType = instrumentType;
     return this;
@@ -85,13 +128,16 @@ public ViewSelectorModel withInstrumentType(InstrumentTypeModel instrumentType)
    *
    * <p>If omitted or null, all instrument units match.
    */
-  @JsonProperty("unit")
+  @JsonProperty(UNIT)
   @Nullable
   public String getUnit() {
+    if (unit == null) {
+      return ExtensionPropertyUtil.getGraduated(UNIT, extensionProperties, String.class);
+    }
     return unit;
   }
 
-  @JsonProperty("unit")
+  @JsonProperty(UNIT)
   public ViewSelectorModel withUnit(String unit) {
     this.unit = unit;
     return this;
@@ -102,13 +148,16 @@ public ViewSelectorModel withUnit(String unit) {
    *
    * <p>If omitted or null, all meter names match.
    */
-  @JsonProperty("meter_name")
+  @JsonProperty(METER_NAME)
   @Nullable
   public String getMeterName() {
+    if (meterName == null) {
+      return ExtensionPropertyUtil.getGraduated(METER_NAME, extensionProperties, String.class);
+    }
     return meterName;
   }
 
-  @JsonProperty("meter_name")
+  @JsonProperty(METER_NAME)
   public ViewSelectorModel withMeterName(String meterName) {
     this.meterName = meterName;
     return this;
@@ -119,13 +168,16 @@ public ViewSelectorModel withMeterName(String meterName) {
    *
    * <p>If omitted or null, all meter versions match.
    */
-  @JsonProperty("meter_version")
+  @JsonProperty(METER_VERSION)
   @Nullable
   public String getMeterVersion() {
+    if (meterVersion == null) {
+      return ExtensionPropertyUtil.getGraduated(METER_VERSION, extensionProperties, String.class);
+    }
     return meterVersion;
   }
 
-  @JsonProperty("meter_version")
+  @JsonProperty(METER_VERSION)
   public ViewSelectorModel withMeterVersion(String meterVersion) {
     this.meterVersion = meterVersion;
     return this;
@@ -136,18 +188,39 @@ public ViewSelectorModel withMeterVersion(String meterVersion) {
    *
    * <p>If omitted or null, all meter schema URLs match.
    */
-  @JsonProperty("meter_schema_url")
+  @JsonProperty(METER_SCHEMA_URL)
   @Nullable
   public String getMeterSchemaUrl() {
+    if (meterSchemaUrl == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          METER_SCHEMA_URL, extensionProperties, String.class);
+    }
     return meterSchemaUrl;
   }
 
-  @JsonProperty("meter_schema_url")
+  @JsonProperty(METER_SCHEMA_URL)
   public ViewSelectorModel withMeterSchemaUrl(String meterSchemaUrl) {
     this.meterSchemaUrl = meterSchemaUrl;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public ViewSelectorModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "ViewSelectorModel{"
@@ -163,6 +236,8 @@ public String toString() {
         + meterVersion
         + ", meterSchemaUrl="
         + meterSchemaUrl
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -181,6 +256,8 @@ public int hashCode() {
     h ^= (this.meterVersion == null) ? 0 : this.meterVersion.hashCode();
     h *= 1000003;
     h ^= (this.meterSchemaUrl == null) ? 0 : this.meterSchemaUrl.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -206,7 +283,10 @@ public boolean equals(@Nullable Object o) {
               : this.meterVersion.equals(that.meterVersion))
           && (this.meterSchemaUrl == null
               ? that.meterSchemaUrl == null
-              : this.meterSchemaUrl.equals(that.meterSchemaUrl));
+              : this.meterSchemaUrl.equals(that.meterSchemaUrl))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewStreamModel.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewStreamModel.java
index 124b0ccf4b4..f6c24cec833 100644
--- a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewStreamModel.java
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ViewStreamModel.java
@@ -5,41 +5,71 @@
 
 package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model;
 
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewStreamModel.AGGREGATION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewStreamModel.AGGREGATION_CARDINALITY_LIMIT;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewStreamModel.ATTRIBUTE_KEYS;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewStreamModel.DESCRIPTION;
+import static io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewStreamModel.NAME;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import javax.annotation.Generated;
 import javax.annotation.Nullable;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@JsonPropertyOrder({
-  "name",
-  "description",
-  "aggregation",
-  "aggregation_cardinality_limit",
-  "attribute_keys"
-})
+@JsonPropertyOrder({NAME, DESCRIPTION, AGGREGATION, AGGREGATION_CARDINALITY_LIMIT, ATTRIBUTE_KEYS})
 @Generated("io.opentelemetry.gradle.DeclarativeConfigPojoGenerator")
 public class ViewStreamModel {
 
+  static final String NAME = "name";
+  static final String DESCRIPTION = "description";
+  static final String AGGREGATION = "aggregation";
+  static final String AGGREGATION_CARDINALITY_LIMIT = "aggregation_cardinality_limit";
+  static final String ATTRIBUTE_KEYS = "attribute_keys";
+
+  private static final Map<String, Class<?>> STABLE_PROPERTIES;
+
+  static {
+    STABLE_PROPERTIES = new HashMap<>();
+    STABLE_PROPERTIES.put(NAME, String.class);
+    STABLE_PROPERTIES.put(DESCRIPTION, String.class);
+    STABLE_PROPERTIES.put(AGGREGATION, AggregationModel.class);
+    STABLE_PROPERTIES.put(AGGREGATION_CARDINALITY_LIMIT, Integer.class);
+    STABLE_PROPERTIES.put(ATTRIBUTE_KEYS, IncludeExcludeModel.class);
+  }
+
+  private static final boolean ALLOWS_ADDITIONAL_PROPERTIES = false;
+
   @Nullable private String name;
   @Nullable private String description;
   @Nullable private AggregationModel aggregation;
   @Nullable private Integer aggregationCardinalityLimit;
   @Nullable private IncludeExcludeModel attributeKeys;
+  private Map<String, Object> extensionProperties = new LinkedHashMap<String, Object>();
 
   /**
    * Configure metric name of the resulting stream(s).
    *
    * <p>If omitted or null, the instrument's original name is used.
    */
-  @JsonProperty("name")
+  @JsonProperty(NAME)
   @Nullable
   public String getName() {
+    if (name == null) {
+      return ExtensionPropertyUtil.getGraduated(NAME, extensionProperties, String.class);
+    }
     return name;
   }
 
-  @JsonProperty("name")
+  @JsonProperty(NAME)
   public ViewStreamModel withName(String name) {
     this.name = name;
     return this;
@@ -50,13 +80,16 @@ public ViewStreamModel withName(String name) {
    *
    * <p>If omitted or null, the instrument's origin description is used.
    */
-  @JsonProperty("description")
+  @JsonProperty(DESCRIPTION)
   @Nullable
   public String getDescription() {
+    if (description == null) {
+      return ExtensionPropertyUtil.getGraduated(DESCRIPTION, extensionProperties, String.class);
+    }
     return description;
   }
 
-  @JsonProperty("description")
+  @JsonProperty(DESCRIPTION)
   public ViewStreamModel withDescription(String description) {
     this.description = description;
     return this;
@@ -67,13 +100,17 @@ public ViewStreamModel withDescription(String description) {
    *
    * <p>If omitted, default is used.
    */
-  @JsonProperty("aggregation")
+  @JsonProperty(AGGREGATION)
   @Nullable
   public AggregationModel getAggregation() {
+    if (aggregation == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          AGGREGATION, extensionProperties, AggregationModel.class);
+    }
     return aggregation;
   }
 
-  @JsonProperty("aggregation")
+  @JsonProperty(AGGREGATION)
   public ViewStreamModel withAggregation(AggregationModel aggregation) {
     this.aggregation = aggregation;
     return this;
@@ -84,13 +121,17 @@ public ViewStreamModel withAggregation(AggregationModel aggregation) {
    *
    * <p>If omitted or null, the metric reader's default cardinality limit is used.
    */
-  @JsonProperty("aggregation_cardinality_limit")
+  @JsonProperty(AGGREGATION_CARDINALITY_LIMIT)
   @Nullable
   public Integer getAggregationCardinalityLimit() {
+    if (aggregationCardinalityLimit == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          AGGREGATION_CARDINALITY_LIMIT, extensionProperties, Integer.class);
+    }
     return aggregationCardinalityLimit;
   }
 
-  @JsonProperty("aggregation_cardinality_limit")
+  @JsonProperty(AGGREGATION_CARDINALITY_LIMIT)
   public ViewStreamModel withAggregationCardinalityLimit(Integer aggregationCardinalityLimit) {
     this.aggregationCardinalityLimit = aggregationCardinalityLimit;
     return this;
@@ -101,18 +142,39 @@ public ViewStreamModel withAggregationCardinalityLimit(Integer aggregationCardin
    *
    * <p>If omitted, all attribute keys are retained.
    */
-  @JsonProperty("attribute_keys")
+  @JsonProperty(ATTRIBUTE_KEYS)
   @Nullable
   public IncludeExcludeModel getAttributeKeys() {
+    if (attributeKeys == null) {
+      return ExtensionPropertyUtil.getGraduated(
+          ATTRIBUTE_KEYS, extensionProperties, IncludeExcludeModel.class);
+    }
     return attributeKeys;
   }
 
-  @JsonProperty("attribute_keys")
+  @JsonProperty(ATTRIBUTE_KEYS)
   public ViewStreamModel withAttributeKeys(IncludeExcludeModel attributeKeys) {
     this.attributeKeys = attributeKeys;
     return this;
   }
 
+  @JsonAnyGetter
+  public Map<String, Object> getExtensionProperties() {
+    return ExtensionPropertyUtil.filterSerializable(extensionProperties, STABLE_PROPERTIES);
+  }
+
+  @JsonAnySetter
+  public ViewStreamModel withExtensionProperty(String name, @Nullable Object value) {
+    ExtensionPropertyUtil.handleAnySetter(
+        name,
+        value,
+        extensionProperties,
+        Collections.emptyMap(),
+        STABLE_PROPERTIES,
+        ALLOWS_ADDITIONAL_PROPERTIES);
+    return this;
+  }
+
   @Override
   public String toString() {
     return "ViewStreamModel{"
@@ -126,6 +188,8 @@ public String toString() {
         + aggregationCardinalityLimit
         + ", attributeKeys="
         + attributeKeys
+        + ", extensionProperties="
+        + extensionProperties
         + "}";
   }
 
@@ -145,6 +209,8 @@ public int hashCode() {
             : this.aggregationCardinalityLimit.hashCode();
     h *= 1000003;
     h ^= (this.attributeKeys == null) ? 0 : this.attributeKeys.hashCode();
+    h *= 1000003;
+    h ^= (this.extensionProperties == null) ? 0 : this.extensionProperties.hashCode();
     return h;
   }
 
@@ -167,7 +233,10 @@ public boolean equals(@Nullable Object o) {
               : this.aggregationCardinalityLimit.equals(that.aggregationCardinalityLimit))
           && (this.attributeKeys == null
               ? that.attributeKeys == null
-              : this.attributeKeys.equals(that.attributeKeys));
+              : this.attributeKeys.equals(that.attributeKeys))
+          && (this.extensionProperties == null
+              ? that.extensionProperties == null
+              : this.extensionProperties.equals(that.extensionProperties));
     }
     return false;
   }
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/ExtensionPropertyUtil.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/ExtensionPropertyUtil.java
new file mode 100644
index 00000000000..65e9595b35f
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/ExtensionPropertyUtil.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.logging.Logger;
+import javax.annotation.Nullable;
+
+/**
+ * Shared {@code @JsonAnySetter} logic for generated stable model classes.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class ExtensionPropertyUtil {
+
+  private static final String DEV_SUFFIX = "/development";
+  private static final Logger LOGGER = Logger.getLogger(ExtensionPropertyUtil.class.getName());
+
+  private ExtensionPropertyUtil() {}
+
+  /**
+   * Routes a single {@code @JsonAnySetter} call into {@code extensionProperties}. Known
+   * experimental keys are type-converted for parse-time checking. Keys of the form {@code
+   * {stableName}/development} for a known stable property are graduated: a warning is logged and
+   * the value is converted to the stable type but stored under the original {@code /development}
+   * key so serialization round-trips. Unknown keys are stored raw on open types or
+   * warned-and-dropped on closed types.
+   */
+  public static void handleAnySetter(
+      String name,
+      @Nullable Object value,
+      Map<String, Object> extensionProperties,
+      Map<String, Class<?>> experimentalPropertyTypes,
+      Map<String, Class<?>> stablePropertyTypes,
+      boolean allowsAdditionalProperties) {
+
+    if (name.endsWith(DEV_SUFFIX)) {
+      String candidate = name.substring(0, name.length() - DEV_SUFFIX.length());
+      Class<?> stableType = stablePropertyTypes.get(candidate);
+      if (stableType != null) {
+        LOGGER.warning(
+            "Property '" + name + "' has been stabilized. Use '" + candidate + "' instead.");
+        extensionProperties.put(
+            name, value == null ? null : ModelMapper.MAPPER.convertValue(value, stableType));
+        return;
+      }
+    }
+
+    Class<?> experimentalType = experimentalPropertyTypes.get(name);
+    if (experimentalType != null) {
+      extensionProperties.put(
+          name, value == null ? null : ModelMapper.MAPPER.convertValue(value, experimentalType));
+      return;
+    }
+
+    if (allowsAdditionalProperties) {
+      extensionProperties.put(name, value);
+      return;
+    }
+
+    LOGGER.warning("Unknown property '" + name + "' is not recognized and will be ignored.");
+  }
+
+  /**
+   * Returns the extension property value for {@code key}, cast to {@code type}.
+   *
+   * <p>Values are guaranteed to be the correct type at store time: {@link #handleAnySetter}
+   * converts known experimental properties via {@code ModelMapper} before storing, and the
+   * generated accessor builders enforce the type at the call site. A {@link ClassCastException}
+   * here indicates a contract violation (e.g. writing directly to the extension properties map with
+   * the wrong type).
+   */
+  @Nullable
+  public static <T> T get(String key, Map<String, Object> extensionProperties, Class<T> type) {
+    Object raw = extensionProperties.get(key);
+    return raw == null ? null : type.cast(raw);
+  }
+
+  /**
+   * Looks up a graduated value stored by {@link #handleAnySetter} under {@code stableKey +
+   * "/development"}.
+   */
+  @Nullable
+  public static <T> T getGraduated(
+      String stableKey, Map<String, Object> extensionProperties, Class<T> type) {
+    return get(stableKey + DEV_SUFFIX, extensionProperties, type);
+  }
+
+  /**
+   * Returns {@code extensionProperties} minus graduated entries (keys of the form {@code
+   * X/development} where {@code X} is in {@code stableProperties}). Used by {@code @JsonAnyGetter}
+   * to avoid emitting graduated values twice: once under the stable {@code @JsonProperty} key via
+   * the getter's {@link #getGraduated} fallback, and once under {@code /development} via the raw
+   * map.
+   */
+  public static Map<String, Object> filterSerializable(
+      Map<String, Object> extensionProperties, Map<String, Class<?>> stableProperties) {
+    if (stableProperties.isEmpty() || extensionProperties.isEmpty()) {
+      return extensionProperties;
+    }
+    Map<String, Object> filtered = null;
+    for (String key : extensionProperties.keySet()) {
+      if (key.endsWith(DEV_SUFFIX)
+          && stableProperties.containsKey(key.substring(0, key.length() - DEV_SUFFIX.length()))) {
+        if (filtered == null) {
+          filtered = new LinkedHashMap<>(extensionProperties);
+        }
+        filtered.remove(key);
+      }
+    }
+    return filtered != null ? filtered : extensionProperties;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/LogRecordExporterModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/LogRecordExporterModelAccessor.java
new file mode 100644
index 00000000000..e0cf6ca602f
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/LogRecordExporterModelAccessor.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordExporterModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link LogRecordExporterModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class LogRecordExporterModelAccessor {
+
+  private LogRecordExporterModelAccessor() {}
+
+  static final String OTLP_FILE = "otlp_file/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(OTLP_FILE, ExperimentalOtlpFileExporterModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalOtlpFileExporterModel getOtlpFile(LogRecordExporterModel model) {
+    return ExtensionPropertyUtil.get(
+        OTLP_FILE, model.getExtensionProperties(), ExperimentalOtlpFileExporterModel.class);
+  }
+
+  public static LogRecordExporterModel withOtlpFile(
+      LogRecordExporterModel model, ExperimentalOtlpFileExporterModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(OTLP_FILE, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/LogRecordProcessorModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/LogRecordProcessorModelAccessor.java
new file mode 100644
index 00000000000..ce8b533a2bf
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/LogRecordProcessorModelAccessor.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordProcessorModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link LogRecordProcessorModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class LogRecordProcessorModelAccessor {
+
+  private LogRecordProcessorModelAccessor() {}
+
+  static final String EVENT_TO_SPAN_EVENT_BRIDGE = "event_to_span_event_bridge/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(
+        EVENT_TO_SPAN_EVENT_BRIDGE,
+        ExperimentalEventToSpanEventBridgeLogRecordProcessorModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalEventToSpanEventBridgeLogRecordProcessorModel getEventToSpanEventBridge(
+      LogRecordProcessorModel model) {
+    return ExtensionPropertyUtil.get(
+        EVENT_TO_SPAN_EVENT_BRIDGE,
+        model.getExtensionProperties(),
+        ExperimentalEventToSpanEventBridgeLogRecordProcessorModel.class);
+  }
+
+  public static LogRecordProcessorModel withEventToSpanEventBridge(
+      LogRecordProcessorModel model,
+      ExperimentalEventToSpanEventBridgeLogRecordProcessorModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(EVENT_TO_SPAN_EVENT_BRIDGE, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/LoggerProviderModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/LoggerProviderModelAccessor.java
new file mode 100644
index 00000000000..f7e833e8767
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/LoggerProviderModelAccessor.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LoggerProviderModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link LoggerProviderModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class LoggerProviderModelAccessor {
+
+  private LoggerProviderModelAccessor() {}
+
+  static final String LOGGER_CONFIGURATOR = "logger_configurator/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(LOGGER_CONFIGURATOR, ExperimentalLoggerConfiguratorModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalLoggerConfiguratorModel getLoggerConfigurator(
+      LoggerProviderModel model) {
+    return ExtensionPropertyUtil.get(
+        LOGGER_CONFIGURATOR,
+        model.getExtensionProperties(),
+        ExperimentalLoggerConfiguratorModel.class);
+  }
+
+  public static LoggerProviderModel withLoggerConfigurator(
+      LoggerProviderModel model, ExperimentalLoggerConfiguratorModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(LOGGER_CONFIGURATOR, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/MeterProviderModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/MeterProviderModelAccessor.java
new file mode 100644
index 00000000000..a0f39c7b4dc
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/MeterProviderModelAccessor.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.MeterProviderModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link MeterProviderModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class MeterProviderModelAccessor {
+
+  private MeterProviderModelAccessor() {}
+
+  static final String METER_CONFIGURATOR = "meter_configurator/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(METER_CONFIGURATOR, ExperimentalMeterConfiguratorModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalMeterConfiguratorModel getMeterConfigurator(MeterProviderModel model) {
+    return ExtensionPropertyUtil.get(
+        METER_CONFIGURATOR,
+        model.getExtensionProperties(),
+        ExperimentalMeterConfiguratorModel.class);
+  }
+
+  public static MeterProviderModel withMeterConfigurator(
+      MeterProviderModel model, ExperimentalMeterConfiguratorModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(METER_CONFIGURATOR, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/ModelMapper.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/ModelMapper.java
new file mode 100644
index 00000000000..722c2e69f82
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/ModelMapper.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import com.fasterxml.jackson.annotation.JsonSetter;
+import com.fasterxml.jackson.annotation.Nulls;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+/**
+ * Canonical {@link ObjectMapper} configuration for parsing declarative configuration YAML. {@link
+ * io.opentelemetry.sdk.autoconfigure.declarativeconfig.DeclarativeConfiguration#MAPPER} delegates
+ * to this instance.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class ModelMapper {
+
+  public static final ObjectMapper MAPPER;
+
+  static {
+    MAPPER =
+        new ObjectMapper()
+            // Create empty object instances for keys which are present but have null values
+            .setDefaultSetterInfo(JsonSetter.Value.forValueNulls(Nulls.AS_EMPTY));
+    // Boxed primitives which are present but have null values should be set to null, rather than
+    // empty instances
+    MAPPER.configOverride(String.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
+    MAPPER.configOverride(Integer.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
+    MAPPER.configOverride(Double.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
+    MAPPER.configOverride(Boolean.class).setSetterInfo(JsonSetter.Value.forValueNulls(Nulls.SET));
+  }
+
+  private ModelMapper() {}
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/OpenTelemetryConfigurationModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/OpenTelemetryConfigurationModelAccessor.java
new file mode 100644
index 00000000000..e39a56db220
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/OpenTelemetryConfigurationModelAccessor.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OpenTelemetryConfigurationModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link OpenTelemetryConfigurationModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class OpenTelemetryConfigurationModelAccessor {
+
+  private OpenTelemetryConfigurationModelAccessor() {}
+
+  static final String INSTRUMENTATION = "instrumentation/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(INSTRUMENTATION, ExperimentalInstrumentationModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalInstrumentationModel getInstrumentation(
+      OpenTelemetryConfigurationModel model) {
+    return ExtensionPropertyUtil.get(
+        INSTRUMENTATION, model.getExtensionProperties(), ExperimentalInstrumentationModel.class);
+  }
+
+  public static OpenTelemetryConfigurationModel withInstrumentation(
+      OpenTelemetryConfigurationModel model, ExperimentalInstrumentationModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(INSTRUMENTATION, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/PeriodicMetricReaderModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/PeriodicMetricReaderModelAccessor.java
new file mode 100644
index 00000000000..d78d874f058
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/PeriodicMetricReaderModelAccessor.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PeriodicMetricReaderModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link PeriodicMetricReaderModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class PeriodicMetricReaderModelAccessor {
+
+  private PeriodicMetricReaderModelAccessor() {}
+
+  static final String MAX_EXPORT_BATCH_SIZE = "max_export_batch_size/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(MAX_EXPORT_BATCH_SIZE, Integer.class);
+  }
+
+  @Nullable
+  public static Integer getMaxExportBatchSize(PeriodicMetricReaderModel model) {
+    return ExtensionPropertyUtil.get(
+        MAX_EXPORT_BATCH_SIZE, model.getExtensionProperties(), Integer.class);
+  }
+
+  public static PeriodicMetricReaderModel withMaxExportBatchSize(
+      PeriodicMetricReaderModel model, Integer value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(MAX_EXPORT_BATCH_SIZE, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/PullMetricExporterModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/PullMetricExporterModelAccessor.java
new file mode 100644
index 00000000000..80362f68a33
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/PullMetricExporterModelAccessor.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PullMetricExporterModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link PullMetricExporterModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class PullMetricExporterModelAccessor {
+
+  private PullMetricExporterModelAccessor() {}
+
+  static final String PROMETHEUS = "prometheus/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(PROMETHEUS, ExperimentalPrometheusMetricExporterModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalPrometheusMetricExporterModel getPrometheus(
+      PullMetricExporterModel model) {
+    return ExtensionPropertyUtil.get(
+        PROMETHEUS,
+        model.getExtensionProperties(),
+        ExperimentalPrometheusMetricExporterModel.class);
+  }
+
+  public static PullMetricExporterModel withPrometheus(
+      PullMetricExporterModel model, ExperimentalPrometheusMetricExporterModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(PROMETHEUS, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/PushMetricExporterModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/PushMetricExporterModelAccessor.java
new file mode 100644
index 00000000000..663a96aebb4
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/PushMetricExporterModelAccessor.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PushMetricExporterModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link PushMetricExporterModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class PushMetricExporterModelAccessor {
+
+  private PushMetricExporterModelAccessor() {}
+
+  static final String OTLP_FILE = "otlp_file/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(OTLP_FILE, ExperimentalOtlpFileMetricExporterModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalOtlpFileMetricExporterModel getOtlpFile(PushMetricExporterModel model) {
+    return ExtensionPropertyUtil.get(
+        OTLP_FILE, model.getExtensionProperties(), ExperimentalOtlpFileMetricExporterModel.class);
+  }
+
+  public static PushMetricExporterModel withOtlpFile(
+      PushMetricExporterModel model, ExperimentalOtlpFileMetricExporterModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(OTLP_FILE, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/ResourceModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/ResourceModelAccessor.java
new file mode 100644
index 00000000000..c416478e1a5
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/ResourceModelAccessor.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ResourceModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link ResourceModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class ResourceModelAccessor {
+
+  private ResourceModelAccessor() {}
+
+  static final String DETECTION = "detection/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(DETECTION, ExperimentalResourceDetectionModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalResourceDetectionModel getDetection(ResourceModel model) {
+    return ExtensionPropertyUtil.get(
+        DETECTION, model.getExtensionProperties(), ExperimentalResourceDetectionModel.class);
+  }
+
+  public static ResourceModel withDetection(
+      ResourceModel model, ExperimentalResourceDetectionModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(DETECTION, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/SamplerModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/SamplerModelAccessor.java
new file mode 100644
index 00000000000..76e1e8854fb
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/SamplerModelAccessor.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link SamplerModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class SamplerModelAccessor {
+
+  private SamplerModelAccessor() {}
+
+  static final String COMPOSITE = "composite/development";
+  static final String JAEGER_REMOTE = "jaeger_remote/development";
+  static final String PROBABILITY = "probability/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(COMPOSITE, ExperimentalComposableSamplerModel.class);
+    EXPERIMENTAL_PROPERTIES.put(JAEGER_REMOTE, ExperimentalJaegerRemoteSamplerModel.class);
+    EXPERIMENTAL_PROPERTIES.put(PROBABILITY, ExperimentalProbabilitySamplerModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalComposableSamplerModel getComposite(SamplerModel model) {
+    return ExtensionPropertyUtil.get(
+        COMPOSITE, model.getExtensionProperties(), ExperimentalComposableSamplerModel.class);
+  }
+
+  public static SamplerModel withComposite(
+      SamplerModel model, ExperimentalComposableSamplerModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(COMPOSITE, value);
+    return model;
+  }
+
+  @Nullable
+  public static ExperimentalJaegerRemoteSamplerModel getJaegerRemote(SamplerModel model) {
+    return ExtensionPropertyUtil.get(
+        JAEGER_REMOTE, model.getExtensionProperties(), ExperimentalJaegerRemoteSamplerModel.class);
+  }
+
+  public static SamplerModel withJaegerRemote(
+      SamplerModel model, ExperimentalJaegerRemoteSamplerModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(JAEGER_REMOTE, value);
+    return model;
+  }
+
+  @Nullable
+  public static ExperimentalProbabilitySamplerModel getProbability(SamplerModel model) {
+    return ExtensionPropertyUtil.get(
+        PROBABILITY, model.getExtensionProperties(), ExperimentalProbabilitySamplerModel.class);
+  }
+
+  public static SamplerModel withProbability(
+      SamplerModel model, ExperimentalProbabilitySamplerModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(PROBABILITY, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/SpanExporterModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/SpanExporterModelAccessor.java
new file mode 100644
index 00000000000..30e73ef51fe
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/SpanExporterModelAccessor.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanExporterModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link SpanExporterModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class SpanExporterModelAccessor {
+
+  private SpanExporterModelAccessor() {}
+
+  static final String OTLP_FILE = "otlp_file/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(OTLP_FILE, ExperimentalOtlpFileExporterModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalOtlpFileExporterModel getOtlpFile(SpanExporterModel model) {
+    return ExtensionPropertyUtil.get(
+        OTLP_FILE, model.getExtensionProperties(), ExperimentalOtlpFileExporterModel.class);
+  }
+
+  public static SpanExporterModel withOtlpFile(
+      SpanExporterModel model, ExperimentalOtlpFileExporterModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(OTLP_FILE, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/TracerProviderModelAccessor.java b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/TracerProviderModelAccessor.java
new file mode 100644
index 00000000000..bf054e14ed5
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/main/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/internal/TracerProviderModelAccessor.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal;
+
+import static java.util.Objects.requireNonNull;
+
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TracerProviderModel;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Provides typed access to experimental properties on {@link TracerProviderModel}.
+ *
+ * <p>This class is internal and experimental. Its APIs are unstable and can change at any time. Its
+ * APIs (or a version of them) may be promoted to the public stable API in the future, but no
+ * guarantees are made.
+ */
+public final class TracerProviderModelAccessor {
+
+  private TracerProviderModelAccessor() {}
+
+  static final String TRACER_CONFIGURATOR = "tracer_configurator/development";
+
+  public static final Map<String, Class<?>> EXPERIMENTAL_PROPERTIES;
+
+  static {
+    EXPERIMENTAL_PROPERTIES = new HashMap<>();
+    EXPERIMENTAL_PROPERTIES.put(TRACER_CONFIGURATOR, ExperimentalTracerConfiguratorModel.class);
+  }
+
+  @Nullable
+  public static ExperimentalTracerConfiguratorModel getTracerConfigurator(
+      TracerProviderModel model) {
+    return ExtensionPropertyUtil.get(
+        TRACER_CONFIGURATOR,
+        model.getExtensionProperties(),
+        ExperimentalTracerConfiguratorModel.class);
+  }
+
+  public static TracerProviderModel withTracerConfigurator(
+      TracerProviderModel model, ExperimentalTracerConfiguratorModel value) {
+    requireNonNull(value, "value");
+    model.withExtensionProperty(TRACER_CONFIGURATOR, value);
+    return model;
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/DeclarativeConfigurationCreateTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/DeclarativeConfigurationCreateTest.java
index 053953a5a94..d0ab0fb0476 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/DeclarativeConfigurationCreateTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/DeclarativeConfigurationCreateTest.java
@@ -175,7 +175,7 @@ void create_ModelCustomizer() {
         new TracerProviderModel()
             .withProcessors(
                 Collections.singletonList(
-                    new SpanProcessorModel().withAdditionalProperty("test", null))));
+                    new SpanProcessorModel().withExtensionProperty("test", null))));
     ExtendedOpenTelemetrySdk sdk =
         DeclarativeConfiguration.create(
                 model,
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ExtensionPropertyUtilTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ExtensionPropertyUtilTest.java
new file mode 100644
index 00000000000..28ae352473a
--- /dev/null
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ExtensionPropertyUtilTest.java
@@ -0,0 +1,187 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.autoconfigure.declarativeconfig;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import io.github.netmikey.logunit.api.LogCapturer;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordLimitsModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LoggerProviderModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalComposableSamplerModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExtensionPropertyUtil;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ModelMapper;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+import org.slf4j.event.Level;
+
+class ExtensionPropertyUtilTest {
+
+  @RegisterExtension
+  LogCapturer logs =
+      LogCapturer.create().captureForLogger(ExtensionPropertyUtil.class.getName(), Level.TRACE);
+
+  @Test
+  void handleAnySetter_knownExperimentalKey_convertsAndStores() {
+    Map<String, Object> props = new LinkedHashMap<>();
+    Map<String, Class<?>> experimentalTypes = new HashMap<>();
+    experimentalTypes.put("composite/development", ExperimentalComposableSamplerModel.class);
+
+    ExtensionPropertyUtil.handleAnySetter(
+        "composite/development",
+        new LinkedHashMap<>(),
+        props,
+        experimentalTypes,
+        Collections.emptyMap(),
+        false);
+
+    assertThat(props.get("composite/development"))
+        .isInstanceOf(ExperimentalComposableSamplerModel.class);
+  }
+
+  @Test
+  void handleAnySetter_knownExperimentalKey_nullValue_storesNull() {
+    Map<String, Object> props = new LinkedHashMap<>();
+    Map<String, Class<?>> experimentalTypes = new HashMap<>();
+    experimentalTypes.put("composite/development", ExperimentalComposableSamplerModel.class);
+
+    ExtensionPropertyUtil.handleAnySetter(
+        "composite/development", null, props, experimentalTypes, Collections.emptyMap(), false);
+
+    assertThat(props).containsEntry("composite/development", null);
+  }
+
+  @Test
+  void handleAnySetter_graduatedKey_storesUnderDevelopmentKey_andWarns() {
+    Map<String, Object> props = new LinkedHashMap<>();
+    Map<String, Class<?>> stableTypes = new HashMap<>();
+    stableTypes.put("limits", LogRecordLimitsModel.class);
+
+    ExtensionPropertyUtil.handleAnySetter(
+        "limits/development",
+        new LinkedHashMap<>(),
+        props,
+        Collections.emptyMap(),
+        stableTypes,
+        false);
+
+    assertThat(props).doesNotContainKey("limits");
+    assertThat(props.get("limits/development")).isInstanceOf(LogRecordLimitsModel.class);
+    logs.assertContains("Property 'limits/development' has been stabilized. Use 'limits' instead.");
+  }
+
+  @Test
+  void handleAnySetter_unknownKey_openType_stores() {
+    Map<String, Object> props = new LinkedHashMap<>();
+
+    ExtensionPropertyUtil.handleAnySetter(
+        "custom_exporter",
+        "config_value",
+        props,
+        Collections.emptyMap(),
+        Collections.emptyMap(),
+        true);
+
+    assertThat(props).containsEntry("custom_exporter", "config_value");
+  }
+
+  @Test
+  void handleAnySetter_unknownKey_closedType_doesNotStore_andWarns() {
+    Map<String, Object> props = new LinkedHashMap<>();
+
+    ExtensionPropertyUtil.handleAnySetter(
+        "unknown_key", "value", props, Collections.emptyMap(), Collections.emptyMap(), false);
+
+    assertThat(props).isEmpty();
+    logs.assertContains("Unknown property 'unknown_key' is not recognized and will be ignored.");
+  }
+
+  @Test
+  void get_absentKey_returnsNull() {
+    assertThat(
+            ExtensionPropertyUtil.get("missing", new LinkedHashMap<>(), LogRecordLimitsModel.class))
+        .isNull();
+  }
+
+  @Test
+  void get_presentKey_returnsTypedValue() {
+    Map<String, Object> props = new LinkedHashMap<>();
+    LogRecordLimitsModel limits = new LogRecordLimitsModel();
+    props.put("limits", limits);
+
+    assertThat(ExtensionPropertyUtil.get("limits", props, LogRecordLimitsModel.class))
+        .isSameAs(limits);
+  }
+
+  @Test
+  void stableGetter_returnsGraduatedValue_fromExtensionPropertiesFallback() {
+    LoggerProviderModel model = new LoggerProviderModel();
+    model.withExtensionProperty("limits/development", new LinkedHashMap<>());
+
+    assertThat(model.getLimits()).isNotNull().isInstanceOf(LogRecordLimitsModel.class);
+  }
+
+  @Test
+  void filterSerializable_noStableProperties_returnsInputUnchanged() {
+    Map<String, Object> props = new LinkedHashMap<>();
+    props.put("anything/development", "x");
+    assertThat(ExtensionPropertyUtil.filterSerializable(props, Collections.emptyMap()))
+        .isSameAs(props);
+  }
+
+  @Test
+  void filterSerializable_noMatchingGraduatedKeys_returnsInputUnchanged() {
+    Map<String, Object> props = new LinkedHashMap<>();
+    props.put("composite/development", "x");
+    Map<String, Class<?>> stableProperties = new HashMap<>();
+    stableProperties.put("limits", LogRecordLimitsModel.class);
+
+    assertThat(ExtensionPropertyUtil.filterSerializable(props, stableProperties)).isSameAs(props);
+  }
+
+  @Test
+  void filterSerializable_dropsGraduatedKeys_preservesOthers() {
+    Map<String, Object> props = new LinkedHashMap<>();
+    props.put("limits/development", "graduated");
+    props.put("composite/development", "still-experimental");
+    props.put("custom_key", "open-schema-extension");
+    Map<String, Class<?>> stableProperties = new HashMap<>();
+    stableProperties.put("limits", LogRecordLimitsModel.class);
+
+    Map<String, Object> filtered =
+        ExtensionPropertyUtil.filterSerializable(props, stableProperties);
+
+    assertThat(filtered)
+        .doesNotContainKey("limits/development")
+        .containsEntry("composite/development", "still-experimental")
+        .containsEntry("custom_key", "open-schema-extension");
+    assertThat(props).containsKey("limits/development");
+  }
+
+  @Test
+  void stableModel_roundTripsGraduatedKey_emitsStableKeyOnly() throws Exception {
+    String json = "{\"limits/development\":{}}";
+    LoggerProviderModel model = ModelMapper.MAPPER.readValue(json, LoggerProviderModel.class);
+
+    assertThat(model.getLimits()).isNotNull().isInstanceOf(LogRecordLimitsModel.class);
+
+    String reserialized = ModelMapper.MAPPER.writeValueAsString(model);
+    assertThat(reserialized).contains("\"limits\":").doesNotContain("limits/development");
+  }
+
+  @Test
+  void stableModel_roundTripsNonGraduatedDevelopmentKey_verbatim() throws Exception {
+    String json = "{\"composite/development\":{}}";
+    SamplerModel model = ModelMapper.MAPPER.readValue(json, SamplerModel.class);
+
+    String reserialized = ModelMapper.MAPPER.writeValueAsString(model);
+    assertThat(reserialized).contains("composite/development");
+  }
+}
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/IdGeneratorFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/IdGeneratorFactoryTest.java
index 3b5bcbddcc9..ecbc7444352 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/IdGeneratorFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/IdGeneratorFactoryTest.java
@@ -13,9 +13,9 @@
 import io.opentelemetry.internal.testing.CleanupExtension;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.component.IdGeneratorComponentProvider;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.IdGeneratorModel;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.IdGeneratorPropertyModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.RandomIdGeneratorModel;
 import io.opentelemetry.sdk.trace.IdGenerator;
+import java.util.Collections;
 import java.util.stream.Stream;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.extension.RegisterExtension;
@@ -51,7 +51,7 @@ private static Stream<Arguments> createTestCases() {
             IdGenerator.random()),
         Arguments.argumentSet(
             "SPI id generator",
-            new IdGeneratorModel().withAdditionalProperty("test", new IdGeneratorPropertyModel()),
+            new IdGeneratorModel().withExtensionProperty("test", null),
             IdGeneratorComponentProvider.TestIdGenerator.create()));
   }
 
@@ -68,9 +68,7 @@ private static Stream<Arguments> createInvalidTestCases() {
         Arguments.argumentSet(
             "unknown SPI id generator",
             new IdGeneratorModel()
-                .withAdditionalProperty(
-                    "unknown_key",
-                    new IdGeneratorPropertyModel().withAdditionalProperty("key1", "value")),
+                .withExtensionProperty("unknown_key", Collections.singletonMap("key1", "value")),
             "No component provider detected for io.opentelemetry.sdk.trace.IdGenerator with name \"unknown_key\"."));
   }
 }
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordExporterFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordExporterFactoryTest.java
index 320d68f0a87..bb9ac1672b2 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordExporterFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordExporterFactoryTest.java
@@ -22,17 +22,18 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.GrpcTlsModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.HttpTlsModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordExporterModel;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordExporterPropertyModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.NameStringValuePairModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalOtlpFileExporterModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.LogRecordExporterModelAccessor;
 import io.opentelemetry.sdk.logs.export.LogRecordExporter;
 import java.io.IOException;
 import java.nio.file.Path;
 import java.security.cert.CertificateEncodingException;
 import java.time.Duration;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Stream;
 import org.junit.jupiter.api.BeforeAll;
@@ -156,8 +157,8 @@ Stream<Arguments> createTestCases() {
                 .build()),
         Arguments.argumentSet(
             "otlp_file/development",
-            new LogRecordExporterModel()
-                .withOtlpFileDevelopment(new ExperimentalOtlpFileExporterModel()),
+            LogRecordExporterModelAccessor.withOtlpFile(
+                new LogRecordExporterModel(), new ExperimentalOtlpFileExporterModel()),
             OtlpStdoutLogRecordExporter.builder().build()));
   }
 
@@ -174,9 +175,7 @@ Stream<Arguments> createInvalidTestCases() {
         Arguments.argumentSet(
             "unknown component provider",
             new LogRecordExporterModel()
-                .withAdditionalProperty(
-                    "unknown_key",
-                    new LogRecordExporterPropertyModel().withAdditionalProperty("key1", "value1")),
+                .withExtensionProperty("unknown_key", Collections.singletonMap("key1", "value1")),
             "No component provider detected for io.opentelemetry.sdk.logs.export.LogRecordExporter with name \"unknown_key\"."));
   }
 
@@ -186,10 +185,7 @@ void create_SpiExporter_Valid() {
         LogRecordExporterFactory.getInstance()
             .create(
                 new LogRecordExporterModel()
-                    .withAdditionalProperty(
-                        "test",
-                        new LogRecordExporterPropertyModel()
-                            .withAdditionalProperty("key1", "value1")),
+                    .withExtensionProperty("test", Collections.singletonMap("key1", "value1")),
                 context);
     assertThat(logRecordExporter)
         .isInstanceOf(LogRecordExporterComponentProvider.TestLogRecordExporter.class);
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordProcessorFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordProcessorFactoryTest.java
index 993248282ef..5512536dff7 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordProcessorFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LogRecordProcessorFactoryTest.java
@@ -16,15 +16,16 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.BatchLogRecordProcessorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordProcessorModel;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.LogRecordProcessorPropertyModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SimpleLogRecordProcessorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalEventToSpanEventBridgeLogRecordProcessorModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.LogRecordProcessorModelAccessor;
 import io.opentelemetry.sdk.extension.incubator.logs.EventToSpanEventBridge;
 import io.opentelemetry.sdk.logs.LogRecordProcessor;
 import io.opentelemetry.sdk.logs.export.BatchLogRecordProcessor;
 import io.opentelemetry.sdk.logs.export.SimpleLogRecordProcessor;
 import java.time.Duration;
+import java.util.Collections;
 import java.util.stream.Stream;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.extension.RegisterExtension;
@@ -95,14 +96,13 @@ private static Stream<Arguments> createTestCases() {
                 OtlpHttpLogRecordExporter.builder().setComponentLoader(context).build())),
         Arguments.argumentSet(
             "event_to_span_event_bridge/development",
-            new LogRecordProcessorModel()
-                .withEventToSpanEventBridgeDevelopment(
-                    new ExperimentalEventToSpanEventBridgeLogRecordProcessorModel()),
+            LogRecordProcessorModelAccessor.withEventToSpanEventBridge(
+                new LogRecordProcessorModel(),
+                new ExperimentalEventToSpanEventBridgeLogRecordProcessorModel()),
             EventToSpanEventBridge.create()),
         Arguments.argumentSet(
             "spi test processor",
-            new LogRecordProcessorModel()
-                .withAdditionalProperty("test", new LogRecordProcessorPropertyModel()),
+            new LogRecordProcessorModel().withExtensionProperty("test", null),
             LogRecordProcessorComponentProvider.TestLogRecordProcessor.create()));
   }
 
@@ -127,9 +127,7 @@ private static Stream<Arguments> createInvalidTestCases() {
         Arguments.argumentSet(
             "unknown component provider",
             new LogRecordProcessorModel()
-                .withAdditionalProperty(
-                    "unknown_key",
-                    new LogRecordProcessorPropertyModel().withAdditionalProperty("key1", "value1")),
+                .withExtensionProperty("unknown_key", Collections.singletonMap("key1", "value1")),
             "No component provider detected for io.opentelemetry.sdk.logs.LogRecordProcessor with name \"unknown_key\"."));
   }
 }
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LoggerProviderFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LoggerProviderFactoryTest.java
index 1336c24ebf8..6f2ed9e80de 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LoggerProviderFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/LoggerProviderFactoryTest.java
@@ -23,6 +23,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalLoggerConfigModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalLoggerConfiguratorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalLoggerMatcherAndConfigModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.LoggerProviderModelAccessor;
 import io.opentelemetry.sdk.common.internal.ScopeConfigurator;
 import io.opentelemetry.sdk.common.internal.ScopeConfiguratorBuilder;
 import io.opentelemetry.sdk.logs.LogLimits;
@@ -81,32 +82,31 @@ private static Stream<Arguments> createArguments() {
             "full configuration",
             LoggerProviderAndAttributeLimits.create(
                 new AttributeLimitsModel(),
-                new LoggerProviderModel()
-                    .withLimits(
-                        new LogRecordLimitsModel()
-                            .withAttributeCountLimit(1)
-                            .withAttributeValueLengthLimit(2))
-                    .withProcessors(
-                        Collections.singletonList(
-                            new LogRecordProcessorModel()
-                                .withBatch(
-                                    new BatchLogRecordProcessorModel()
-                                        .withExporter(
-                                            new LogRecordExporterModel()
-                                                .withOtlpHttp(new OtlpHttpExporterModel())))))
-                    .withLoggerConfiguratorDevelopment(
-                        new ExperimentalLoggerConfiguratorModel()
-                            .withDefaultConfig(
-                                new ExperimentalLoggerConfigModel().withEnabled(false))
-                            .withLoggers(
-                                Collections.singletonList(
-                                    new ExperimentalLoggerMatcherAndConfigModel()
-                                        .withName("foo")
-                                        .withConfig(
-                                            new ExperimentalLoggerConfigModel()
-                                                .withEnabled(true)
-                                                .withTraceBased(true)
-                                                .withMinimumSeverity(SeverityNumberModel.INFO)))))),
+                LoggerProviderModelAccessor.withLoggerConfigurator(
+                    new LoggerProviderModel()
+                        .withLimits(
+                            new LogRecordLimitsModel()
+                                .withAttributeCountLimit(1)
+                                .withAttributeValueLengthLimit(2))
+                        .withProcessors(
+                            Collections.singletonList(
+                                new LogRecordProcessorModel()
+                                    .withBatch(
+                                        new BatchLogRecordProcessorModel()
+                                            .withExporter(
+                                                new LogRecordExporterModel()
+                                                    .withOtlpHttp(new OtlpHttpExporterModel()))))),
+                    new ExperimentalLoggerConfiguratorModel()
+                        .withDefaultConfig(new ExperimentalLoggerConfigModel().withEnabled(false))
+                        .withLoggers(
+                            Collections.singletonList(
+                                new ExperimentalLoggerMatcherAndConfigModel()
+                                    .withName("foo")
+                                    .withConfig(
+                                        new ExperimentalLoggerConfigModel()
+                                            .withEnabled(true)
+                                            .withTraceBased(true)
+                                            .withMinimumSeverity(SeverityNumberModel.INFO)))))),
             setLoggerConfigurator(
                     SdkLoggerProvider.builder(),
                     ScopeConfigurator.<LoggerConfig>builder()
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MeterProviderFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MeterProviderFactoryTest.java
index 1f890776f70..000162bc871 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MeterProviderFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MeterProviderFactoryTest.java
@@ -23,6 +23,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalMeterConfigModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalMeterConfiguratorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalMeterMatcherAndConfigModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.MeterProviderModelAccessor;
 import io.opentelemetry.sdk.common.internal.ScopeConfigurator;
 import io.opentelemetry.sdk.common.internal.ScopeConfiguratorBuilder;
 import io.opentelemetry.sdk.metrics.ExemplarFilter;
@@ -74,25 +75,27 @@ private static Stream<Arguments> createArguments() {
             "defaults", new MeterProviderModel(), SdkMeterProvider.builder().build()),
         Arguments.argumentSet(
             "with reader view and meter configurator",
-            new MeterProviderModel()
-                .withReaders(
-                    Collections.singletonList(
-                        new MetricReaderModel()
-                            .withPeriodic(
-                                new PeriodicMetricReaderModel()
-                                    .withExporter(
-                                        new PushMetricExporterModel()
-                                            .withOtlpHttp(new OtlpHttpMetricExporterModel())))))
-                .withViews(
-                    Collections.singletonList(
-                        new ViewModel()
-                            .withSelector(
-                                new ViewSelectorModel().withInstrumentName("instrument-name"))
-                            .withStream(
-                                new ViewStreamModel()
-                                    .withName("stream-name")
-                                    .withAttributeKeys(null))))
-                .withMeterConfiguratorDevelopment(
+            MeterProviderModelAccessor.withMeterConfigurator(
+                    new MeterProviderModel()
+                        .withReaders(
+                            Collections.singletonList(
+                                new MetricReaderModel()
+                                    .withPeriodic(
+                                        new PeriodicMetricReaderModel()
+                                            .withExporter(
+                                                new PushMetricExporterModel()
+                                                    .withOtlpHttp(
+                                                        new OtlpHttpMetricExporterModel())))))
+                        .withViews(
+                            Collections.singletonList(
+                                new ViewModel()
+                                    .withSelector(
+                                        new ViewSelectorModel()
+                                            .withInstrumentName("instrument-name"))
+                                    .withStream(
+                                        new ViewStreamModel()
+                                            .withName("stream-name")
+                                            .withAttributeKeys(null)))),
                     new ExperimentalMeterConfiguratorModel()
                         .withDefaultConfig(new ExperimentalMeterConfigModel().withEnabled(false))
                         .withMeters(
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricExporterFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricExporterFactoryTest.java
index 219ef6f0566..e8a071078b8 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricExporterFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricExporterFactoryTest.java
@@ -27,8 +27,8 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcMetricExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpMetricExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PushMetricExporterModel;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PushMetricExporterPropertyModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalOtlpFileMetricExporterModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.PushMetricExporterModelAccessor;
 import io.opentelemetry.sdk.metrics.Aggregation;
 import io.opentelemetry.sdk.metrics.InstrumentType;
 import io.opentelemetry.sdk.metrics.export.AggregationTemporalitySelector;
@@ -39,6 +39,7 @@
 import java.security.cert.CertificateEncodingException;
 import java.time.Duration;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Stream;
 import org.junit.jupiter.api.BeforeAll;
@@ -186,8 +187,8 @@ Stream<Arguments> createTestCases() {
             LoggingMetricExporter.create()),
         Arguments.argumentSet(
             "otlp_file/development",
-            new PushMetricExporterModel()
-                .withOtlpFileDevelopment(new ExperimentalOtlpFileMetricExporterModel()),
+            PushMetricExporterModelAccessor.withOtlpFile(
+                new PushMetricExporterModel(), new ExperimentalOtlpFileMetricExporterModel()),
             OtlpStdoutMetricExporter.builder().build()));
   }
 
@@ -204,9 +205,7 @@ Stream<Arguments> createInvalidTestCases() {
         Arguments.argumentSet(
             "unknown component provider",
             new PushMetricExporterModel()
-                .withAdditionalProperty(
-                    "unknown_key",
-                    new PushMetricExporterPropertyModel().withAdditionalProperty("key1", "value1")),
+                .withExtensionProperty("unknown_key", Collections.singletonMap("key1", "value1")),
             "No component provider detected for io.opentelemetry.sdk.metrics.export.MetricExporter with name \"unknown_key\"."));
   }
 
@@ -216,10 +215,7 @@ void create_SpiExporter_Valid() {
         MetricExporterFactory.getInstance()
             .create(
                 new PushMetricExporterModel()
-                    .withAdditionalProperty(
-                        "test",
-                        new PushMetricExporterPropertyModel()
-                            .withAdditionalProperty("key1", "value1")),
+                    .withExtensionProperty("test", Collections.singletonMap("key1", "value1")),
                 context);
     assertThat(metricExporter)
         .isInstanceOf(MetricExporterComponentProvider.TestMetricExporter.class);
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricReaderFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricReaderFactoryTest.java
index 38c9c4e4bb0..144942f53ad 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricReaderFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/MetricReaderFactoryTest.java
@@ -30,6 +30,8 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.PushMetricExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalPrometheusMetricExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalPrometheusTranslationStrategyModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.PeriodicMetricReaderModelAccessor;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.PullMetricExporterModelAccessor;
 import io.opentelemetry.sdk.common.internal.IncludeExcludePredicate;
 import io.opentelemetry.sdk.metrics.InstrumentType;
 import io.opentelemetry.sdk.metrics.export.MetricReader;
@@ -117,14 +119,15 @@ static Stream<Arguments> createTestCases() throws IOException {
                     "periodic configured",
                     new MetricReaderModel()
                         .withPeriodic(
-                            new PeriodicMetricReaderModel()
-                                .withExporter(
-                                    new PushMetricExporterModel()
-                                        .withOtlpHttp(new OtlpHttpMetricExporterModel()))
-                                .withInterval(1)
-                                .withCardinalityLimits(
-                                    new CardinalityLimitsModel().withDefault(100))
-                                .withMaxExportBatchSizeDevelopment(200)),
+                            PeriodicMetricReaderModelAccessor.withMaxExportBatchSize(
+                                new PeriodicMetricReaderModel()
+                                    .withExporter(
+                                        new PushMetricExporterModel()
+                                            .withOtlpHttp(new OtlpHttpMetricExporterModel()))
+                                    .withInterval(1)
+                                    .withCardinalityLimits(
+                                        new CardinalityLimitsModel().withDefault(100)),
+                                200)),
                     SdkMeterProviderUtil.setMaxExportBatchSize(
                             PeriodicMetricReader.builder(
                                     OtlpHttpMetricExporter.builder()
@@ -147,10 +150,10 @@ static Stream<Arguments> createTestCases() throws IOException {
                 .withPull(
                     new PullMetricReaderModel()
                         .withExporter(
-                            new PullMetricExporterModel()
-                                .withPrometheusDevelopment(
-                                    new ExperimentalPrometheusMetricExporterModel()
-                                        .withPort(prom1Port)))),
+                            PullMetricExporterModelAccessor.withPrometheus(
+                                new PullMetricExporterModel(),
+                                new ExperimentalPrometheusMetricExporterModel()
+                                    .withPort(prom1Port)))),
             prom1Expected,
             null,
             true));
@@ -175,20 +178,20 @@ static Stream<Arguments> createTestCases() throws IOException {
                     new PullMetricReaderModel()
                         .withCardinalityLimits(new CardinalityLimitsModel().withDefault(100))
                         .withExporter(
-                            new PullMetricExporterModel()
-                                .withPrometheusDevelopment(
-                                    new ExperimentalPrometheusMetricExporterModel()
-                                        .withHost("localhost")
-                                        .withPort(prom2Port)
-                                        .withResourceConstantLabels(
-                                            new IncludeExcludeModel()
-                                                .withIncluded(singletonList("foo"))
-                                                .withExcluded(singletonList("bar")))
-                                        .withScopeInfoEnabled(false)
-                                        .withTargetInfoEnabledDevelopment(false)
-                                        .withTranslationStrategy(
-                                            ExperimentalPrometheusTranslationStrategyModel
-                                                .UNDERSCORE_ESCAPING_WITHOUT_SUFFIXES_DEVELOPMENT)))),
+                            PullMetricExporterModelAccessor.withPrometheus(
+                                new PullMetricExporterModel(),
+                                new ExperimentalPrometheusMetricExporterModel()
+                                    .withHost("localhost")
+                                    .withPort(prom2Port)
+                                    .withResourceConstantLabels(
+                                        new IncludeExcludeModel()
+                                            .withIncluded(singletonList("foo"))
+                                            .withExcluded(singletonList("bar")))
+                                    .withScopeInfoEnabled(false)
+                                    .withTargetInfoEnabledDevelopment(false)
+                                    .withTranslationStrategy(
+                                        ExperimentalPrometheusTranslationStrategyModel
+                                            .UNDERSCORE_ESCAPING_WITHOUT_SUFFIXES_DEVELOPMENT)))),
             prom2Expected,
             100,
             true));
@@ -208,14 +211,14 @@ static Stream<Arguments> createTestCases() throws IOException {
                 .withPull(
                     new PullMetricReaderModel()
                         .withExporter(
-                            new PullMetricExporterModel()
-                                .withPrometheusDevelopment(
-                                    new ExperimentalPrometheusMetricExporterModel()
-                                        .withHost("localhost")
-                                        .withPort(prom3Port)
-                                        .withTranslationStrategy(
-                                            ExperimentalPrometheusTranslationStrategyModel
-                                                .NO_TRANSLATION_DEVELOPMENT)))),
+                            PullMetricExporterModelAccessor.withPrometheus(
+                                new PullMetricExporterModel(),
+                                new ExperimentalPrometheusMetricExporterModel()
+                                    .withHost("localhost")
+                                    .withPort(prom3Port)
+                                    .withTranslationStrategy(
+                                        ExperimentalPrometheusTranslationStrategyModel
+                                            .NO_TRANSLATION_DEVELOPMENT)))),
             prom3Expected,
             null,
             true));
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/OpenTelemetryConfigurationFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/OpenTelemetryConfigurationFactoryTest.java
index 1ce8e112283..97f4acb570f 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/OpenTelemetryConfigurationFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/OpenTelemetryConfigurationFactoryTest.java
@@ -52,6 +52,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ViewStreamModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalResourceDetectionModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalResourceDetectorModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ResourceModelAccessor;
 import io.opentelemetry.sdk.internal.ExtendedOpenTelemetrySdk;
 import io.opentelemetry.sdk.internal.OpenTelemetrySdkBuilderUtil;
 import io.opentelemetry.sdk.internal.SdkConfigProvider;
@@ -238,8 +239,8 @@ void create_Configured() throws NoSuchFieldException {
             .withPropagator(
                 new PropagatorModel().withCompositeList("tracecontext,baggage,b3multi,b3"))
             .withResource(
-                new ResourceModel()
-                    .withDetectionDevelopment(
+                ResourceModelAccessor.withDetection(
+                        new ResourceModel(),
                         new ExperimentalResourceDetectionModel()
                             .withDetectors(
                                 Arrays.asList(
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/PropagatorFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/PropagatorFactoryTest.java
index cea489ee45b..ee14ceaf528 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/PropagatorFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/PropagatorFactoryTest.java
@@ -106,7 +106,7 @@ private static Stream<Arguments> createArguments() {
             new PropagatorModel()
                 .withComposite(
                     Collections.singletonList(
-                        new TextMapPropagatorModel().withAdditionalProperty("test", null))),
+                        new TextMapPropagatorModel().withExtensionProperty("test", null))),
             ContextPropagators.create(
                 TextMapPropagator.composite(
                     new TextMapPropagatorComponentProvider.TestTextMapPropagator(
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ResourceFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ResourceFactoryTest.java
index 220b774f2b2..86db236316e 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ResourceFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/ResourceFactoryTest.java
@@ -15,6 +15,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ResourceModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalResourceDetectionModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalResourceDetectorModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ResourceModelAccessor;
 import io.opentelemetry.sdk.resources.Resource;
 import java.util.Arrays;
 import java.util.Collections;
@@ -68,19 +69,19 @@ private static Stream<Arguments> createArgs() {
   void createWithDetectors(
       @Nullable List<String> included, @Nullable List<String> excluded, Resource expectedResource) {
     ResourceModel resourceModel =
-        new ResourceModel()
-            .withDetectionDevelopment(
-                new ExperimentalResourceDetectionModel()
-                    .withDetectors(
-                        Arrays.asList(
-                            new ExperimentalResourceDetectorModel()
-                                .withAdditionalProperty("order_first", null),
-                            new ExperimentalResourceDetectorModel()
-                                .withAdditionalProperty("order_second", null),
-                            new ExperimentalResourceDetectorModel()
-                                .withAdditionalProperty("shape_color", null)))
-                    .withAttributes(
-                        new IncludeExcludeModel().withIncluded(included).withExcluded(excluded)));
+        ResourceModelAccessor.withDetection(
+            new ResourceModel(),
+            new ExperimentalResourceDetectionModel()
+                .withDetectors(
+                    Arrays.asList(
+                        new ExperimentalResourceDetectorModel()
+                            .withAdditionalProperty("order_first", null),
+                        new ExperimentalResourceDetectorModel()
+                            .withAdditionalProperty("order_second", null),
+                        new ExperimentalResourceDetectorModel()
+                            .withAdditionalProperty("shape_color", null)))
+                .withAttributes(
+                    new IncludeExcludeModel().withIncluded(included).withExcluded(excluded)));
     Resource resource = ResourceFactory.getInstance().create(resourceModel, context);
     assertThat(resource).isEqualTo(expectedResource);
   }
@@ -179,52 +180,52 @@ private static Stream<Arguments> createInvalidDetectorsArgs() {
     return Stream.of(
         Arguments.argumentSet(
             "unknown detector",
-            new ResourceModel()
-                .withDetectionDevelopment(
-                    new ExperimentalResourceDetectionModel()
-                        .withDetectors(
-                            Collections.singletonList(
-                                new ExperimentalResourceDetectorModel()
-                                    .withAdditionalProperty("foo", null)))),
+            ResourceModelAccessor.withDetection(
+                new ResourceModel(),
+                new ExperimentalResourceDetectionModel()
+                    .withDetectors(
+                        Collections.singletonList(
+                            new ExperimentalResourceDetectorModel()
+                                .withAdditionalProperty("foo", null)))),
             "No component provider detected for io.opentelemetry.sdk.resources.Resource with name \"foo\"."),
         Arguments.argumentSet(
             "detector multiple entries",
-            new ResourceModel()
-                .withDetectionDevelopment(
-                    new ExperimentalResourceDetectionModel()
-                        .withDetectors(
-                            Collections.singletonList(
-                                new ExperimentalResourceDetectorModel()
-                                    .withAdditionalProperty("foo", null)
-                                    .withAdditionalProperty("bar", null)))),
+            ResourceModelAccessor.withDetection(
+                new ResourceModel(),
+                new ExperimentalResourceDetectionModel()
+                    .withDetectors(
+                        Collections.singletonList(
+                            new ExperimentalResourceDetectorModel()
+                                .withAdditionalProperty("foo", null)
+                                .withAdditionalProperty("bar", null)))),
             "resource detector must have exactly one entry but has 2: [foo,bar]"),
         Arguments.argumentSet(
             "detector no entries",
-            new ResourceModel()
-                .withDetectionDevelopment(
-                    new ExperimentalResourceDetectionModel()
-                        .withDetectors(
-                            Collections.singletonList(new ExperimentalResourceDetectorModel()))),
+            ResourceModelAccessor.withDetection(
+                new ResourceModel(),
+                new ExperimentalResourceDetectionModel()
+                    .withDetectors(
+                        Collections.singletonList(new ExperimentalResourceDetectorModel()))),
             "resource detector must have exactly one entry but has 0"),
         Arguments.argumentSet(
             "included empty list",
-            new ResourceModel()
-                .withDetectionDevelopment(
-                    new ExperimentalResourceDetectionModel()
-                        .withAttributes(
-                            new IncludeExcludeModel()
-                                .withIncluded(Collections.emptyList())
-                                .withExcluded(null))),
+            ResourceModelAccessor.withDetection(
+                new ResourceModel(),
+                new ExperimentalResourceDetectionModel()
+                    .withAttributes(
+                        new IncludeExcludeModel()
+                            .withIncluded(Collections.emptyList())
+                            .withExcluded(null))),
             "included must not be empty"),
         Arguments.argumentSet(
             "excluded empty list",
-            new ResourceModel()
-                .withDetectionDevelopment(
-                    new ExperimentalResourceDetectionModel()
-                        .withAttributes(
-                            new IncludeExcludeModel()
-                                .withIncluded(null)
-                                .withExcluded(Collections.emptyList()))),
+            ResourceModelAccessor.withDetection(
+                new ResourceModel(),
+                new ExperimentalResourceDetectionModel()
+                    .withAttributes(
+                        new IncludeExcludeModel()
+                            .withIncluded(null)
+                            .withExcluded(Collections.emptyList()))),
             "excluded must not be empty"));
   }
 }
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SamplerFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SamplerFactoryTest.java
index 9a6a1f599bf..3a54f2d5201 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SamplerFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SamplerFactoryTest.java
@@ -17,7 +17,6 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.AlwaysOnSamplerModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.ParentBasedSamplerModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerModel;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SamplerPropertyModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.TraceIdRatioBasedSamplerModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalComposableAlwaysOffSamplerModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalComposableAlwaysOnSamplerModel;
@@ -26,6 +25,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalComposableRuleBasedSamplerModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalComposableSamplerModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalJaegerRemoteSamplerModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.SamplerModelAccessor;
 import io.opentelemetry.sdk.extension.incubator.trace.samplers.ComposableSampler;
 import io.opentelemetry.sdk.extension.incubator.trace.samplers.CompositeSampler;
 import io.opentelemetry.sdk.extension.trace.jaeger.sampler.JaegerRemoteSampler;
@@ -34,6 +34,7 @@
 import java.io.Closeable;
 import java.time.Duration;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.stream.Stream;
 import javax.annotation.Nullable;
@@ -124,13 +125,13 @@ private static Stream<Arguments> createArguments() {
                 .build()),
         Arguments.argumentSet(
             "jaeger_remote",
-            new SamplerModel()
-                .withJaegerRemoteDevelopment(
-                    new ExperimentalJaegerRemoteSamplerModel()
-                        .withEndpoint("http://jaeger-remote-endpoint")
-                        .withInterval(10_000)
-                        .withInitialSampler(
-                            new SamplerModel().withAlwaysOff(new AlwaysOffSamplerModel()))),
+            SamplerModelAccessor.withJaegerRemote(
+                new SamplerModel(),
+                new ExperimentalJaegerRemoteSamplerModel()
+                    .withEndpoint("http://jaeger-remote-endpoint")
+                    .withInterval(10_000)
+                    .withInitialSampler(
+                        new SamplerModel().withAlwaysOff(new AlwaysOffSamplerModel()))),
             JaegerRemoteSampler.builder()
                 .setEndpoint("http://jaeger-remote-endpoint")
                 .setPollingInterval(Duration.ofSeconds(10))
@@ -138,44 +139,44 @@ private static Stream<Arguments> createArguments() {
                 .build()),
         Arguments.argumentSet(
             "composite/development always_on",
-            new SamplerModel()
-                .withCompositeDevelopment(
-                    new ExperimentalComposableSamplerModel()
-                        .withAlwaysOn(new ExperimentalComposableAlwaysOnSamplerModel())),
+            SamplerModelAccessor.withComposite(
+                new SamplerModel(),
+                new ExperimentalComposableSamplerModel()
+                    .withAlwaysOn(new ExperimentalComposableAlwaysOnSamplerModel())),
             CompositeSampler.wrap(ComposableSampler.alwaysOn())),
         Arguments.argumentSet(
             "composite/development always_off",
-            new SamplerModel()
-                .withCompositeDevelopment(
-                    new ExperimentalComposableSamplerModel()
-                        .withAlwaysOff(new ExperimentalComposableAlwaysOffSamplerModel())),
+            SamplerModelAccessor.withComposite(
+                new SamplerModel(),
+                new ExperimentalComposableSamplerModel()
+                    .withAlwaysOff(new ExperimentalComposableAlwaysOffSamplerModel())),
             CompositeSampler.wrap(ComposableSampler.alwaysOff())),
         Arguments.argumentSet(
             "composite/development probability",
-            new SamplerModel()
-                .withCompositeDevelopment(
-                    new ExperimentalComposableSamplerModel()
-                        .withProbability(
-                            new ExperimentalComposableProbabilitySamplerModel().withRatio(0.5))),
+            SamplerModelAccessor.withComposite(
+                new SamplerModel(),
+                new ExperimentalComposableSamplerModel()
+                    .withProbability(
+                        new ExperimentalComposableProbabilitySamplerModel().withRatio(0.5))),
             CompositeSampler.wrap(ComposableSampler.probability(0.5))),
         Arguments.argumentSet(
             "composite/development rule_based",
-            new SamplerModel()
-                .withCompositeDevelopment(
-                    new ExperimentalComposableSamplerModel()
-                        .withRuleBased(new ExperimentalComposableRuleBasedSamplerModel())),
+            SamplerModelAccessor.withComposite(
+                new SamplerModel(),
+                new ExperimentalComposableSamplerModel()
+                    .withRuleBased(new ExperimentalComposableRuleBasedSamplerModel())),
             CompositeSampler.wrap(ComposableSampler.ruleBasedBuilder().build())),
         Arguments.argumentSet(
             "composite/development parent_threshold",
-            new SamplerModel()
-                .withCompositeDevelopment(
-                    new ExperimentalComposableSamplerModel()
-                        .withParentThreshold(
-                            new ExperimentalComposableParentThresholdSamplerModel()
-                                .withRoot(
-                                    new ExperimentalComposableSamplerModel()
-                                        .withAlwaysOn(
-                                            new ExperimentalComposableAlwaysOnSamplerModel())))),
+            SamplerModelAccessor.withComposite(
+                new SamplerModel(),
+                new ExperimentalComposableSamplerModel()
+                    .withParentThreshold(
+                        new ExperimentalComposableParentThresholdSamplerModel()
+                            .withRoot(
+                                new ExperimentalComposableSamplerModel()
+                                    .withAlwaysOn(
+                                        new ExperimentalComposableAlwaysOnSamplerModel())))),
             CompositeSampler.wrap(
                 ComposableSampler.parentThreshold(ComposableSampler.alwaysOn()))));
   }
@@ -194,30 +195,27 @@ private static Stream<Arguments> createInvalidArguments() {
     return Stream.of(
         Arguments.argumentSet(
             "jaeger_remote missing endpoint",
-            new SamplerModel()
-                .withJaegerRemoteDevelopment(new ExperimentalJaegerRemoteSamplerModel()),
+            SamplerModelAccessor.withJaegerRemote(
+                new SamplerModel(), new ExperimentalJaegerRemoteSamplerModel()),
             "jaeger remote sampler endpoint is required"),
         Arguments.argumentSet(
             "jaeger_remote missing initialSampler",
-            new SamplerModel()
-                .withJaegerRemoteDevelopment(
-                    new ExperimentalJaegerRemoteSamplerModel()
-                        .withEndpoint("http://jaeger-remote-endpoint")),
+            SamplerModelAccessor.withJaegerRemote(
+                new SamplerModel(),
+                new ExperimentalJaegerRemoteSamplerModel()
+                    .withEndpoint("http://jaeger-remote-endpoint")),
             "jaeger remote sampler initial_sampler is required"),
         Arguments.argumentSet(
             "parent_threshold missing root",
-            new SamplerModel()
-                .withCompositeDevelopment(
-                    new ExperimentalComposableSamplerModel()
-                        .withParentThreshold(
-                            new ExperimentalComposableParentThresholdSamplerModel())),
+            SamplerModelAccessor.withComposite(
+                new SamplerModel(),
+                new ExperimentalComposableSamplerModel()
+                    .withParentThreshold(new ExperimentalComposableParentThresholdSamplerModel())),
             "parent threshold sampler root is required but is null"),
         Arguments.argumentSet(
             "unknown component provider",
             new SamplerModel()
-                .withAdditionalProperty(
-                    "unknown_key",
-                    new SamplerPropertyModel().withAdditionalProperty("key1", "value1")),
+                .withExtensionProperty("unknown_key", Collections.singletonMap("key1", "value1")),
             "No component provider detected for io.opentelemetry.sdk.trace.samplers.Sampler with name \"unknown_key\"."));
   }
 
@@ -227,9 +225,7 @@ void create_SpiExporter_Valid() {
         SamplerFactory.getInstance()
             .create(
                 new SamplerModel()
-                    .withAdditionalProperty(
-                        "test",
-                        new SamplerPropertyModel().withAdditionalProperty("key1", "value1")),
+                    .withExtensionProperty("test", Collections.singletonMap("key1", "value1")),
                 context);
     assertThat(sampler).isInstanceOf(SamplerComponentProvider.TestSampler.class);
     assertThat(((SamplerComponentProvider.TestSampler) sampler).config.getString("key1"))
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SpanExporterFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SpanExporterFactoryTest.java
index 49409121652..c08fd2244ff 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SpanExporterFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SpanExporterFactoryTest.java
@@ -26,8 +26,8 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpGrpcExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.OtlpHttpExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanExporterModel;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanExporterPropertyModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalOtlpFileExporterModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.SpanExporterModelAccessor;
 import io.opentelemetry.sdk.extension.trace.jaeger.sampler.JaegerRemoteSampler;
 import io.opentelemetry.sdk.trace.export.SpanExporter;
 import java.io.IOException;
@@ -35,6 +35,7 @@
 import java.security.cert.CertificateEncodingException;
 import java.time.Duration;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Stream;
 import org.junit.jupiter.api.BeforeAll;
@@ -163,8 +164,8 @@ Stream<Arguments> createTestCases() {
             LoggingSpanExporter.create()),
         Arguments.argumentSet(
             "otlp_file/development",
-            new SpanExporterModel()
-                .withOtlpFileDevelopment(new ExperimentalOtlpFileExporterModel()),
+            SpanExporterModelAccessor.withOtlpFile(
+                new SpanExporterModel(), new ExperimentalOtlpFileExporterModel()),
             OtlpStdoutSpanExporter.builder().build()));
   }
 
@@ -181,9 +182,7 @@ Stream<Arguments> createInvalidTestCases() {
         Arguments.argumentSet(
             "unknown component provider",
             new SpanExporterModel()
-                .withAdditionalProperty(
-                    "unknown_key",
-                    new SpanExporterPropertyModel().withAdditionalProperty("key1", "value1")),
+                .withExtensionProperty("unknown_key", Collections.singletonMap("key1", "value1")),
             "No component provider detected for io.opentelemetry.sdk.trace.export.SpanExporter with name \"unknown_key\"."));
   }
 
@@ -193,9 +192,7 @@ void create_SpiExporter_Valid() {
         SpanExporterFactory.getInstance()
             .create(
                 new SpanExporterModel()
-                    .withAdditionalProperty(
-                        "test",
-                        new SpanExporterPropertyModel().withAdditionalProperty("key1", "value1")),
+                    .withExtensionProperty("test", Collections.singletonMap("key1", "value1")),
                 context);
     assertThat(spanExporter).isInstanceOf(SpanExporterComponentProvider.TestSpanExporter.class);
     assertThat(
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SpanProcessorFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SpanProcessorFactoryTest.java
index 416c172f58b..e826a320831 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SpanProcessorFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/SpanProcessorFactoryTest.java
@@ -18,11 +18,11 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SimpleSpanProcessorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanExporterModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanProcessorModel;
-import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.SpanProcessorPropertyModel;
 import io.opentelemetry.sdk.trace.SpanProcessor;
 import io.opentelemetry.sdk.trace.export.BatchSpanProcessor;
 import io.opentelemetry.sdk.trace.export.SimpleSpanProcessor;
 import java.time.Duration;
+import java.util.Collections;
 import java.util.stream.Stream;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -113,9 +113,7 @@ private static Stream<Arguments> createInvalidTestCases() {
         Arguments.argumentSet(
             "unknown component provider",
             new SpanProcessorModel()
-                .withAdditionalProperty(
-                    "unknown_key",
-                    new SpanProcessorPropertyModel().withAdditionalProperty("key1", "value1")),
+                .withExtensionProperty("unknown_key", Collections.singletonMap("key1", "value1")),
             "No component provider detected for io.opentelemetry.sdk.trace.SpanProcessor with name \"unknown_key\"."));
   }
 
@@ -125,9 +123,7 @@ void create_SpiProcessor_Valid() {
         SpanProcessorFactory.getInstance()
             .create(
                 new SpanProcessorModel()
-                    .withAdditionalProperty(
-                        "test",
-                        new SpanProcessorPropertyModel().withAdditionalProperty("key1", "value1")),
+                    .withExtensionProperty("test", Collections.singletonMap("key1", "value1")),
                 context);
     assertThat(spanProcessor).isInstanceOf(SpanProcessorComponentProvider.TestSpanProcessor.class);
     assertThat(
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/TracerProviderFactoryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/TracerProviderFactoryTest.java
index da944bed5e0..dc1956b4870 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/TracerProviderFactoryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/TracerProviderFactoryTest.java
@@ -23,6 +23,7 @@
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalTracerConfigModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalTracerConfiguratorModel;
 import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.ExperimentalTracerMatcherAndConfigModel;
+import io.opentelemetry.sdk.autoconfigure.declarativeconfig.model.internal.TracerProviderModelAccessor;
 import io.opentelemetry.sdk.common.internal.ScopeConfigurator;
 import io.opentelemetry.sdk.common.internal.ScopeConfiguratorBuilder;
 import io.opentelemetry.sdk.trace.SdkTracerProvider;
@@ -83,35 +84,33 @@ private static Stream<Arguments> createArguments() {
             "full configuration",
             TracerProviderAndAttributeLimits.create(
                 new AttributeLimitsModel(),
-                new TracerProviderModel()
-                    .withLimits(
-                        new SpanLimitsModel()
-                            .withAttributeCountLimit(1)
-                            .withAttributeValueLengthLimit(2)
-                            .withEventCountLimit(3)
-                            .withLinkCountLimit(4)
-                            .withEventAttributeCountLimit(5)
-                            .withLinkAttributeCountLimit(6))
-                    .withSampler(new SamplerModel().withAlwaysOn(new AlwaysOnSamplerModel()))
-                    .withProcessors(
-                        Collections.singletonList(
-                            new SpanProcessorModel()
-                                .withBatch(
-                                    new BatchSpanProcessorModel()
-                                        .withExporter(
-                                            new SpanExporterModel()
-                                                .withOtlpHttp(new OtlpHttpExporterModel())))))
-                    .withTracerConfiguratorDevelopment(
-                        new ExperimentalTracerConfiguratorModel()
-                            .withDefaultConfig(
-                                new ExperimentalTracerConfigModel().withEnabled(false))
-                            .withTracers(
-                                Collections.singletonList(
-                                    new ExperimentalTracerMatcherAndConfigModel()
-                                        .withName("foo")
-                                        .withConfig(
-                                            new ExperimentalTracerConfigModel()
-                                                .withEnabled(true)))))),
+                TracerProviderModelAccessor.withTracerConfigurator(
+                    new TracerProviderModel()
+                        .withLimits(
+                            new SpanLimitsModel()
+                                .withAttributeCountLimit(1)
+                                .withAttributeValueLengthLimit(2)
+                                .withEventCountLimit(3)
+                                .withLinkCountLimit(4)
+                                .withEventAttributeCountLimit(5)
+                                .withLinkAttributeCountLimit(6))
+                        .withSampler(new SamplerModel().withAlwaysOn(new AlwaysOnSamplerModel()))
+                        .withProcessors(
+                            Collections.singletonList(
+                                new SpanProcessorModel()
+                                    .withBatch(
+                                        new BatchSpanProcessorModel()
+                                            .withExporter(
+                                                new SpanExporterModel()
+                                                    .withOtlpHttp(new OtlpHttpExporterModel()))))),
+                    new ExperimentalTracerConfiguratorModel()
+                        .withDefaultConfig(new ExperimentalTracerConfigModel().withEnabled(false))
+                        .withTracers(
+                            Collections.singletonList(
+                                new ExperimentalTracerMatcherAndConfigModel()
+                                    .withName("foo")
+                                    .withConfig(
+                                        new ExperimentalTracerConfigModel().withEnabled(true)))))),
             addTracerConfigurator(
                     SdkTracerProvider.builder(),
                     ScopeConfigurator.<TracerConfig>builder()
diff --git a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ModelPackageBoundaryTest.java b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ModelPackageBoundaryTest.java
index 731d5fbd82f..dec71f24aef 100644
--- a/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ModelPackageBoundaryTest.java
+++ b/sdk-extensions/declarative-config/src/test/java/io/opentelemetry/sdk/autoconfigure/declarativeconfig/model/ModelPackageBoundaryTest.java
@@ -16,11 +16,13 @@
 /**
  * Guards the experimental/stable package boundary for the generated model types.
  *
- * <p>Experimental (unstable) types must live in {@code MODEL_PACKAGE.internal} (exempt from the
- * stability guarantees in {@code VERSIONING.md}) and stable types in {@code MODEL_PACKAGE}. The
- * generator enforces this by routing types whose name starts with {@code Experimental} into the
- * internal sub-package. This test fails if a schema update or rename ever breaks that invariant
- * &mdash; e.g. leaking a mutable experimental type into the stable public API.
+ * <p>Experimental (unstable) model types must live in {@code MODEL_PACKAGE.internal} and stable
+ * model types in {@code MODEL_PACKAGE}. The generator routes types whose name starts with {@code
+ * Experimental} to the internal sub-package. {@code *ModelAccessor} classes also live in {@code
+ * MODEL_PACKAGE.internal}; they provide typed access to experimental properties on stable classes
+ * and are exempt from the {@code Experimental} prefix requirement. This test fails if a schema
+ * update or rename ever breaks the invariant &mdash; e.g. leaking a mutable experimental type into
+ * the stable public API.
  */
 class ModelPackageBoundaryTest {
 
@@ -51,10 +53,15 @@ void experimentalTypesAreExactlyTheInternalPackage() throws IOException {
             clazz -> {
               boolean inInternal = clazz.getPackage().getName().equals(INTERNAL_PACKAGE);
               boolean experimental = clazz.getSimpleName().startsWith(EXPERIMENTAL_PREFIX);
-              assertThat(experimental)
+              // Internal utility classes are exempt from the Experimental prefix requirement.
+              boolean isInfrastructure =
+                  clazz.getSimpleName().endsWith("Accessor")
+                      || clazz.getSimpleName().equals("ModelMapper")
+                      || clazz.getSimpleName().equals("ExtensionPropertyUtil");
+              assertThat(experimental || isInfrastructure)
                   .as(
-                      "%s: experimental types (name starts with %s) must live in %s, all other "
-                          + "types in %s",
+                      "%s: experimental types (name starts with %s) and internal infrastructure "
+                          + "classes must live in %s, all other types in %s",
                       clazz.getName(), EXPERIMENTAL_PREFIX, INTERNAL_PACKAGE, MODEL_PACKAGE)
                   .isEqualTo(inInternal);
             });