docs: function () {
              if (!this._urlService) {
                  var cfg = ariaModulesUrlServiceEnvironmentUrlService.getUrlServiceCfg(), actionUrlPattern = cfg.args[0], i18nUrlPattern = cfg.args[1];
                  var ClassRef = Aria.getClassRef(cfg.implementation);
                  this._urlService = new (ClassRef)(actionUrlPattern, i18nUrlPattern);
              }
              return this._urlService;
          }