apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/AppNamespaceService.java/AppNamespaceService/AppNamespaceService
class AppNamespaceService:  public AppNamespaceService(
      final AppNamespaceRepository appNamespaceRepository,
      final @Lazy NamespaceService namespaceService,
      final @Lazy ClusterService clusterService,
      final AuditService auditService) {
    this.appNamespaceRepository = appNamespaceRepository;
    this.namespaceService = namespaceService;
    this.clusterService = clusterService;
    this.auditService = auditService;
  }