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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:
 async def _bind_key_to_queue(self, routing_key: AnyStr, queue_name: AnyStr) -> None: """ Bind to queue with specified routing key. :param routing_key: Routing key to bind with. :param queue_name: Name of the queue :return: Does not return anything """

        logger.info("Binding key='%s'", routing_key)

        result = await self._channel.queue_bind(
            exchange_name=self._exchange_name,
            queue_name=queue_name,
            routing_key=routing_key,
        )
        return result