Tell RabbitMQ that you would like to stop consuming by sending the
        Basic.Cancel RPC command.

def stop_consuming(self):
        """Tell RabbitMQ that you would like to stop consuming by sending the
        Basic.Cancel RPC command.

        """
        if self._channel:
            logger.info('Sending a Basic.Cancel RPC command to RabbitMQ')
            self._channel.basic_cancel(self.on_cancelok, self._consumer_tag)