/// <summary>
        /// Gets the details of a payment made previously
        /// </summary>
        /// <param name="paymentId"></param>
        /// <returns></returns>
        public async Task <TransactionResponse> GetPaymentAsync(string paymentId)
        {
            var transaction = await _transactionService.GetTransaction(paymentId);

            return(_modelConverter.MapToTransactionResponse(transaction));
        }