def UnknownFields(self):
    'Returns the UnknownFieldSet.\n\n    Returns:\n      UnknownFieldSet: The unknown fields stored in this message.\n    '
    raise NotImplementedError
Returns the UnknownFieldSet.

Returns:
  UnknownFieldSet: The unknown fields stored in this message.
def UnknownFields(self):
    'Returns the UnknownFieldSet.\n\n    Returns:\n      UnknownFieldSet: The unknown fields stored in this message.\n    '
    raise NotImplementedError