public async Task ExecuteLoadMoreCommand(GifPost item)
        {
            IsBusy = true;

            var skip = Gifs.Count;

            await LoadGifSMs(skip);

            IsBusy = false;
        }
 public bool CanExecuteLoadMoreCommand(GifPost item)
 {
     return(IsNotBusy /*&& Gifs.Count < _totalGifs*/ && Gifs.LastOrDefault().Id == item.Id);
 }