code: def test_list_builder(self):
      test_datasets = {
          tfds.testing.DummyMnist.name,
          tfds.testing.DummyDatasetSharedGenerator.name,
      }
      registered_datasets = set(tfds.list_builders())
      # The tests datasets should not be present in the registered datasets
      self.assertEmpty(test_datasets & registered_datasets)
  
label_desc: Use image node_id 1 for calling the ListBuilderTest obj's underlying member method code with example usage: obj.test_list_builder() without return types