Gets the metadata for a description.

        return: (osid.Metadata) - metadata for the description
        *compliance: mandatory -- This method must be implemented.*

def get_description_metadata(self):
        """Gets the metadata for a description.

        return: (osid.Metadata) - metadata for the description
        *compliance: mandatory -- This method must be implemented.*

        """
        metadata = dict(self._mdata['description'])
        metadata.update({'existing_string_values': self._my_map['description']['text']})
        return Metadata(**metadata)