@Override
	public RocketMQConsumerProperties getConsumer() {
		return this.consumer;
	}
@return {@link RocketMQConsumerProperties} Consumer specific binding
properties. @see {@link RocketMQConsumerProperties}.
spring-cloud-alibaba-starters/spring-cloud-starter-stream-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/properties/RocketMQSpecificPropertiesProvider.java