code: def _generate_examples(self):
      if True:  # pylint: disable=using-constant-test
          raise NotImplementedError("Should not be called")
      yield
  
imports: import contextlib
  import os
  import pathlib
  from typing import Dict, Iterator, List, Optional
  from unittest import mock
  from absl.testing import parameterized
  from etils import epath
  import pytest
  import tensorflow_datasets
  from tensorflow_datasets import testing
  from tensorflow_datasets.core import download
  from tensorflow_datasets.core import utils
  from tensorflow_datasets.core.utils import file_utils
  from tensorflow_datasets.scripts.cli import build
  from tensorflow_datasets.scripts.cli import main
label_desc: Use image node_id 1 for calling the DummyDatasetNoGenerate obj's underlying member method code with example usage: obj._generate_examples() without return types