docs: public final ListAnnotationSpecSetsPagedResponse listAnnotationSpecSets(
        String parent, String filter) {
      PROJECT_PATH_TEMPLATE.validate(parent, "listAnnotationSpecSets");
      ListAnnotationSpecSetsRequest request =
          ListAnnotationSpecSetsRequest.newBuilder().setParent(parent).setFilter(filter).build();
      return listAnnotationSpecSets(request);
    }