code: def MapByteStream(self, byte_stream, **unused_kwargs):  # pylint: disable=redundant-returns-doc
      
      raise errors.MappingError(
          'Unable to map {0:s} data type to byte stream'.format(
              self._data_type_definition.TYPE_INDICATOR))
docs: Maps the data type on a byte stream.
  
      Args:
        byte_stream (bytes): byte stream.
  
      Returns:
        object: mapped value.
  
      Raises:
        MappingError: if the data type definition cannot be mapped on
            the byte stream.