private NamingService namingService() {
		return nacosServiceManager.getNamingService();
	}
@author xiaojing
@author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
@author <a href="mailto:78552423@qq.com">eshun</a>
@author JAY
spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/registry/NacosServiceRegistry.java