@NotNull
  @Override
  public Query<VirtualFile> getDirsByPackageName(@NotNull String packageName, boolean includeLibrarySources) {
    return myDirectoryIndex.getDirectoriesByPackageName(packageName, includeLibrarySources);
  }
@NotNull
  @Override
  public Query<VirtualFile> getDirsByPackageName(@NotNull String packageName, boolean includeLibrarySources)