code: def _output_dir():
      """Returns output directory."""
      return os.path.join(
          FLAGS.tfds_dir,
          "testing",
          "test_data",
          "fake_examples",
          "caltech101",
          "{}_ObjectCategories".format(NUM_CLASSES),
      )
  
file_path: datasets/tensorflow_datasets/testing/fake_data_generation/caltech.py
imports: import os
  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.image_classification import caltech
  import tensorflow_datasets.public_api
  from tensorflow_datasets.testing import fake_data_utils
label_desc: Use image node_id 1 for calling a global function with example usage: _output_dir() and returns: os