private boolean processClasses(@NotNull String name,
                                 @NotNull Processor<? super PsiClass> processor,
                                 @NotNull GlobalSearchScope scope,
                                 @Nullable IdFilter filter) {
    return StubIndex.getInstance().processElements(
      CLASS_SHORT_NAMES, name, myProject, new GrSourceFilterScope(scope), filter, PsiClass.class, processor
    );
  }
private boolean processClasses(@NotNull String name,
                                 @NotNull Processor<? super PsiClass> processor,
                                 @NotNull GlobalSearchScope scope,
                                 @Nullable IdFilter filter)