anchor.diff:          this.loading = true;
           String pageUrl = '/api/user/';
           Map urlArgs = {
  -            'page': this.currentPage,
  -            'rpp': this._resultsPerPage,
  +            'page': this._queryWatcher['page'] ?? '1',
  +            'rpp': this._queryWatcher['rpp'] ?? '10'
           };
   
           this._api
  
positive.code:     templateUrl: 'packages/hgprofiler/component/user/list.html',
      useShadowDom: false
  )
  class UserListComponent extends Object with CurrentPageMixin {
      List<Breadcrumb> crumbs = [
          new Breadcrumb('HGProfiler', '/'),
          new Breadcrumb('User Directory'),
  
negative.code:     String error;
      bool loading = false;
      Pager pager;
      QueryWatcher _queryWatcher;
      List<User> users;
  
      final AuthenticationController auth;
      final RestApiController _api;
      final Router _router;
      final RouteProvider _rp;
      final TitleService _ts;
  
      /// Constructor.
      UserListComponent(this.auth, this._api, this._router, this._rp, this._ts) {
          RouteHandle rh = this._rp.route.newHandle();
          this._queryWatcher = new QueryWatcher(
              rh,
              ['page', 'rpp'],
              this._fetchCurrentPage
          );
          this._fetchCurrentPage();
          this._ts.title = 'User Directory';
      }
  