code: def get_output_file_prefix(split):
      return os.path.join(
          FLAGS.tfds_dir,
          "testing",
          "test_data",
          "fake_examples",
          "patch_camelyon",
          "camelyonpatch_level_2_split_%s" % split,
      )
  
file_path: datasets/tensorflow_datasets/testing/fake_data_generation/patch_camelyon.py
imports: import os
  from absl import app
  from absl import flags
  import h5py
  import numpy
  from tensorflow_datasets.core import utils
label_desc: Use image node_id 1 for calling a global function with example usage: get_output_file_prefix(split) and returns: os