apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/controller/ItemController.java/ItemController/ItemController
class ItemController:  public ItemController(final ItemService itemService, final NamespaceService namespaceService, final CommitService commitService, final ReleaseService releaseService) {
    this.itemService = itemService;
    this.namespaceService = namespaceService;
    this.commitService = commitService;
    this.releaseService = releaseService;
  }