def noop_preprocessing_fn(inputs):
  """No-op preprocessing fn for Transform.

  This is provided as a convenience for pipelines that don't do any data
  preprocessing but require a Transform component anyway (e.g. because the
  trainer expects a transform graph as input).

  Args:
    inputs: Dict of input tensors.

  Returns:
    The unmodified `inputs` dict.
  """
  return inputs