code: @RequestMapping(value = "/cloud/instance/refresh", method = POST, consumes = APPLICATION_JSON_VALUE,
              produces = APPLICATION_JSON_VALUE)
  
      public ResponseEntity<Collection<String>> refreshInstances(
              @Valid @RequestBody(required = false) CloudInstanceListRefreshRequest request) {
          return ResponseEntity.ok().body(cloudInstanceService.refreshInstances(request));
      }
docs: Cloud Instance Endpoints