@Override
	public void subscribe(String serviceName, String groupName, EventListener listener)
			throws NacosException {

	}
@author <a href="mailto:fangjian0423@gmail.com">Jim</a>
spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/registry/MockNamingService.java