Replace deprecated IDE APIs in the IDEA plugin

The marketplace verifier flagged three calls against 2026.3. PluginManager.getPlugin is both deprecated and internal, so PluginManager.getInstance().findEnabledPlugin takes over, and PluginDescriptor.getPath gives way to getPluginPath. TrustedProjects.isTrusted stays: the class it points to, com.intellij.ide.trustedProjects.TrustedProjects, is @ApiStatus.Internal — worse for a plugin to call than an experimental one.

Author: abashev

open-java-format-idea-plugin/src/main/java/com/palantir/javaformat/intellij/FormatterProvider.java

@@ -49,10 +49,11 @@ final class FormatterProvider {
     private final LoadingCache<FormatterCacheKey, Optional<FormatterService>> implementationCache =
             Caffeine.newBuilder().maximumSize(1).build(FormatterProvider::createFormatter);
 
-    @SuppressWarnings("for-rollout:deprecation")
     static IdeaPluginDescriptor getPluginDescriptor() {
         return Preconditions.checkNotNull(
-                PluginManager.getPlugin(PluginId.getId(PLUGIN_ID)), "Couldn't find our own plugin: %s", PLUGIN_ID);
+                PluginManager.getInstance().findEnabledPlugin(PluginId.getId(PLUGIN_ID)),
+                "Couldn't find our own plugin: %s",
+                PLUGIN_ID);
     }
 
     Optional<FormatterService> get(Project project, PalantirJavaFormatSettings settings) {
@@ -89,8 +90,7 @@ private static List<Path> getProvidedImplementationUrls(List<URI> implementation
     private static List<Path> getBundledImplementationUrls() {
         // Load from the jars bundled with the plugin.
         IdeaPluginDescriptor ourPlugin = getPluginDescriptor();
-        @SuppressWarnings("for-rollout:deprecation")
-        Path implDir = ourPlugin.getPath().toPath().resolve("impl");
+        Path implDir = ourPlugin.getPluginPath().resolve("impl");
         log.debug("Using open-java-format implementation bundled with plugin: {}", implDir);
         return listDirAsUrlsUnchecked(implDir);
     }

open-java-format-idea-plugin/src/main/java/com/palantir/javaformat/intellij/PalantirJavaFormatFormattingService.java

@@ -47,6 +47,9 @@ class PalantirJavaFormatFormattingService extends AsyncDocumentFormattingService
     @Override
     protected FormattingTask createFormattingTask(@NotNull AsyncFormattingRequest request) {
         Project project = request.getContext().getProject();
+        // The marketplace verifier reports this class as experimental, and newer IDEs also deprecate it. It stays:
+        // its replacement, com.intellij.ide.trustedProjects.TrustedProjects, is @ApiStatus.Internal — a worse thing
+        // for a plugin to call.
         if (!TrustedProjects.isTrusted(project)) {
             logger.warn("open-java-format: skipping formatting for untrusted project: " + project.getName());
             request.onError(