Add row keys and row range to given request message

        :type message: class:`data_messages_v2_pb2.ReadRowsRequest`
        :param message: The ``ReadRowsRequest`` protobuf

def _update_message_request(self, message):
        """Add row keys and row range to given request message

        :type message: class:`data_messages_v2_pb2.ReadRowsRequest`
        :param message: The ``ReadRowsRequest`` protobuf
        """
        for each in self.row_keys:
            message.rows.row_keys.append(_to_bytes(each))

        for each in self.row_ranges:
            r_kwrags = each.get_range_kwargs()
            message.rows.row_ranges.add(**r_kwrags)