apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/service/NamespaceBranchService.java/NamespaceBranchService/NamespaceBranchService
class NamespaceBranchService:  public NamespaceBranchService(
      final ItemsComparator itemsComparator,
      final UserInfoHolder userInfoHolder,
      final NamespaceService namespaceService,
      final ItemService itemService,
      final AdminServiceAPI.NamespaceBranchAPI namespaceBranchAPI,
      final ReleaseService releaseService) {
    this.itemsComparator = itemsComparator;
    this.userInfoHolder = userInfoHolder;
    this.namespaceService = namespaceService;
    this.itemService = itemService;
    this.namespaceBranchAPI = namespaceBranchAPI;
    this.releaseService = releaseService;
  }