code: def test_full_tf_example(large_mock_mnist_data, tmpdir):
      # First, generate mock dataset
      dataset_url = "file://{}".format(tmpdir)
      mnist_data_to_petastorm_dataset(
          tmpdir,
          dataset_url,
          mnist_data=large_mock_mnist_data,
          spark_master="local[1]",
          parquet_files_count=1,
      )
  
      # Tensorflow train and test
      tf_example.train_and_test(
          dataset_url=dataset_url,
          training_iterations=10,
          batch_size=10,
          evaluation_interval=10,
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_full_tf_example(large_mock_mnist_data, tmpdir) without return types