public async Task LoadItems()
        {
            if (IsBusy)
            {
                return;
            }

            IsBusy    = true;
            IsNotBusy = false;

            try
            {
                var coinDetailResult = await CoinDataStore.GetCoinDetailsAsync(ItemId);

                if (coinDetailResult.Response == "Success")
                {
                    CoinDetails = coinDetailResult;
                }
                else
                {
                    // inform about no result with msg/box
                }
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex);
            }
            finally
            {
                IsBusy    = false;
                IsNotBusy = true;
            }
        }
        public async Task <CoinDetailsResponse> GetCoinDetailsAsync(string id)
        {
            CoinDetailsResponse result = null;

            if (id != null && CrossConnectivity.Current.IsConnected)
            {
                SetHeaders();
                var json = await client.GetStringAsync($"https://www.cryptocompare.com/api/data/coinsnapshotfullbyid/?id={id}");

                result = await Task.Run(() => JsonConvert.DeserializeObject <CoinDetailsResponse>(json, Converter.Settings));
            }

            return(result);
        }