apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/controller/AppNamespaceController.java/AppNamespaceController/countPublicAppNamespaceAssociatedNamespaces
class AppNamespaceController:  @GetMapping("/appnamespaces/{publicNamespaceName}/associated-namespaces/count")
  public int countPublicAppNamespaceAssociatedNamespaces(@PathVariable String publicNamespaceName) {
    return namespaceService.countPublicAppNamespaceAssociatedNamespaces(publicNamespaceName);
  }