@Override
	protected Object convertFromInternal(Message<?> message, Class<?> targetClass, Object conversionHint) {
		Object payload = null;
		for (MessageConverter converter : getMessageConverter().getConverters()) {
			try {
				payload = converter.fromMessage(message, targetClass);
			}
			catch (Exception ignore) {
			}
			if (payload != null) {
				return payload;
			}
		}
		if (payload == null && logger.isDebugEnabled()) {
			logger.debug("Can convert message " + message.toString());
		}
		return payload;
	}
Convert the message payload from serialized form to an Object by RocketMQMessageConverter.
@param message the input message
@param targetClass the target class for the conversion
@param conversionHint an extra object passed to the {@link MessageConverter},
e.g. the associated {@code MethodParameter} (may be {@code null}}
@return the result of the conversion, or {@code null} if the converter cannot
perform the conversion
@since 4.2
spring-cloud-alibaba-starters/spring-cloud-starter-stream-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/convert/RocketMQMessageConverter.java