public async Task TestGetTransfers()
        {
            var transfers = await privateApi.GetTransfers(new DateTimeOffset(new DateTime(2017, 06, 13)));

            foreach (var transfer in transfers)
            {
                Console.WriteLine("Transfer from " + transfer.FromU + " to " + transfer.ToU + ": " +
                                  transfer.Amount + " " + GetCurrencyName(transfer.Cur) + ", Description: " +
                                  transfer.Descr);
            }
        }