apollo-portal/src/main/java/com/ctrip/framework/apollo/openapi/v1/controller/ClusterController.java/ClusterController/ClusterController
class ClusterController:  public ClusterController(
      UserService userService,
      ClusterOpenApiService clusterOpenApiService) {
    this.userService = userService;
    this.clusterOpenApiService = clusterOpenApiService;
  }