code: function limitNotifySubscribers(value, event) {
      if (!event || event === defaultEvent) {
          this._limitChange(value);
      } else if (event === 'beforeChange') {
          this._limitBeforeChange(value);
      } else {
          this._origNotifySubscribers(value, event);
      }
  }
docs: Moved out of "limit" to avoid the extra closure