code: def test_no_tfdv_dir(self):
      with tfds.testing.tmp_dir(self.get_temp_dir()) as tmp_dir:
          builder = tfds.testing.DummyMnist(data_dir=tmp_dir)
          builder.download_and_prepare()  # tfdv not present. Statistics skipped.
  
          # Statistics skipped
          num_examples = int(
              builder.info.splits["train"].statistics.num_examples
          )
          self.assertEqual(num_examples, 0)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow
  import tensorflow_datasets
label_desc: Use image node_id 1 for calling the BuilderNoStatsTest obj's underlying member method code with example usage: obj.test_no_tfdv_dir() without return types