def _copy_tree_to_unique_temp_dir(source, base_temp_dir_path):
  """Copies from source to a unique sub directory under base_temp_dir_path."""
  destination = common.get_unique_temp_path(base_temp_dir_path)
  _copy_tree(source, destination)
  return destination
Copies from source to a unique sub directory under base_temp_dir_path.
tensorflow_transform/beam/tft_beam_io/transform_fn_io.py