@NotNull
  public static List<IndexableSetContributorDescriptor> collectDescriptors(@NotNull Project project) {
    return ContainerUtil.map(IndexableSetContributor.EP_NAME.getExtensionList(),
                             contributor -> new IndexableSetContributorDescriptor(contributor, project));
  }
@NotNull
  public static List<IndexableSetContributorDescriptor> collectDescriptors(@NotNull Project project)