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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def stop_consuming(self):
 """Tell RabbitMQ that we would like to stop consuming."""

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