@Nullable
  public static ExtensionPoint findExtensionPoint(Project project, GlobalSearchScope scope, String fqn) {
    Ref<ExtensionPoint> result = Ref.create();
    FileBasedIndex.getInstance().processValues(NAME, fqn, null, (file, value) -> {
      final PsiManager psiManager = PsiManager.getInstance(project);
      final DomManager domManager = DomManager.getDomManager(project);

      result.set(getExtensionPointDom(psiManager, domManager, file, value));
      return false;
    }, scope);
    return result.get();
  }
@Nullable
  public static ExtensionPoint findExtensionPoint(Project project, GlobalSearchScope scope, String fqn)