public void Register(IDIContainer container)
        {
            container.Register <IPage, MainPage>("MainPage");
            container.Register <IPage, Dashboard>("Dashboard");

#if OAUTH
            container.Register <IPage, OAuthLogin>("Login");
#else
            container.Register <IPage, Login>("Login");
#endif

            container.Register <INavigationService, DefaultNavigationService>();
            container.Register <IDispatchService, UniversalDispatchService>();

            container.Register <ILoginViewModel, LoginViewModel>();
            container.Register <IDashboardViewModel, DashboardViewModel>();
            container.Register <IMainPageViewModel, MainPageViewModel>();

            container.Register <IActivityStreamViewModel, ActivityStreamViewModel>();
            container.Register <IActivityViewModel, ActivityViewModel>();

#if CACHE_ENABLED
            container.Unregister <ICache>();
            container.Register <ICache, StorageCache>();
#endif
        }
 public async Task Logout()
 {
     if (_cache != null)
     {
         await _cache.Clear();
     }
     try
     {
         _container.Unregister <IAuthorization>("Session");
     }
     catch (Exception)
     {
     }
     try
     {
         _container.Unregister <IClient>("Session");
     }
     catch (Exception)
     {
     }
 }