code: def _get_png():
      """Returns a random png image."""
      image = fake_data_utils.get_random_picture(HEIGHT, WIDTH)
      png = tf.image.encode_png(image)
      with utils.nogpu_session() as sess:
          res = sess.run(png)
      return res
  
imports: import os
  import tempfile
  import zipfile
  from absl import app
  from absl import flags
  import numpy
  from tensorflow_datasets.core import utils
  from tensorflow_datasets.core.utils.lazy_imports_utils import tensorflow
  from tensorflow_datasets.object_detection import kitti
  from tensorflow_datasets.testing import fake_data_utils
label_desc: Use image node_id 1 for calling a global function with example usage: _get_png() and returns: res