@Override
	protected MessageHandler createProducerMessageHandler(ProducerDestination destination,
			ExtendedProducerProperties<RocketMQProducerProperties> producerProperties,
			MessageChannel errorChannel) throws Exception {
		throw new UnsupportedOperationException(
				"The abstract binder should not call this method");
	}
A {@link org.springframework.cloud.stream.binder.Binder} that uses RocketMQ as the
underlying middleware.

@author <a href="mailto:fangjian0423@gmail.com">Jim</a>
spring-cloud-alibaba-starters/spring-cloud-starter-stream-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/RocketMQMessageChannelBinder.java