@Override
  public @NotNull Set<VirtualFile> getAdditionalRootsToIndex() {
    Set<VirtualFile> standardResources = myStandardResources.getValue();
    Set<VirtualFile> roots = new HashSet<>(standardResources.size() + 1);
    roots.addAll(standardResources);
    String path = FetchExtResourceAction.getExternalResourcesPath();
    VirtualFile extResources = LocalFileSystem.getInstance().findFileByPath(path);
    if (extResources != null) {
      roots.add(extResources);
    }
    return roots;
  }
@Override
  public @NotNull Set<VirtualFile> getAdditionalRootsToIndex()