code: def main(_):
      """Main script."""
      # Delete metadata versions not present in register version.
      metadata_dir = os.path.join(FLAGS.tfds_dir, "testing", "metadata")
      _delete_metadata_dirs(metadata_dir)
  
file_path: datasets/tensorflow_datasets/scripts/cleanup/metadata_cleanup.py
imports: import os
  from typing import List
  from absl import app
  from absl import flags
  import tensorflow_datasets
  from tensorflow_datasets.core.utils.lazy_imports_utils import tensorflow
label_desc: Use image node_id 3 for calling a global function with example usage: main(_) without return types