private void OnAuthenticated(ILoginModel loginModel)
        {
            if (loginModel == null || string.IsNullOrEmpty(loginModel.Token))
            {
                GroupItems = null;
            }
            else
            {
                GroupItems = _menuDataService.GetMenus();
            }

            //Publish the authorized feature retrieved event.
            _eventAggregator.GetEvent <AuthorizedFeatureRetrievedEvent>().Publish(GroupItems);
        }