public FavoriteViewModel()
            : base("お気に入り")
        {
            FavoriteInstance = new NicoNicoFavorite();
            FavoriteList = new DispatcherCollection<TabItemViewModel>(DispatcherHelper.UIDispatcher);

            FavoriteList.Add(new FavoriteUserViewModel(this, FavoriteInstance));
        }
 public FavoriteUserViewModel(FavoriteViewModel vm, NicoNicoFavorite fav)
     : base("ユーザー")
 {
     Owner = vm;
     FavoriteInstance = fav;
 }