code: def _get_image_ids(images_number, prefix=None):
      """Returns the names (as string) of images."""
      if prefix:
          get_id = lambda: "%s%0.15X" % (prefix, random.getrandbits(56))
      else:
          get_id = lambda: "%0.16X" % random.getrandbits(64)
      return sorted(
          [get_id().lower() for unused_i in range(images_number)]
      )
  
file_path: datasets/tensorflow_datasets/testing/fake_data_generation/open_images.py
imports: import os
  import random
  import tarfile
  from absl import app
  from absl import flags
  from tensorflow_datasets.core import utils
  from tensorflow_datasets.core.features import ClassLabel
  from tensorflow_datasets.object_detection import open_images
  from tensorflow_datasets.testing import fake_data_utils
label_desc: Use image node_id 2 for calling a global function with example usage: _get_image_ids(images_number, prefix) and returns: sorted