private protected override async Task <IEnumerable <Grouping <string, ItemPreview> > > RefreshPageAsync()
        {
            var newList = await WifiProcessor.GetPreviews(ApiHelper.ApiClient);

            return(newList);
        }
        private protected override async Task GetDataAsync()
        {
            var previews = await WifiProcessor.GetPreviews(ApiHelper.ApiClient);

            DisplayItems(previews);
        }