/// <inheritdoc /> public override async Task <IPaymentRequestResult> RequestAsync(Invoice invoice, CancellationToken cancellationToken = default) { if (invoice == null) { throw new ArgumentNullException(nameof(invoice)); } var account = await GetAccountAsync(invoice).ConfigureAwaitFalse(); var data = MellatHelper.CreateRequestData(invoice, account); var responseMessage = await _httpClient .PostXmlAsync(_gatewayOptions.ApiUrl, data, cancellationToken) .ConfigureAwaitFalse(); var response = await responseMessage.Content.ReadAsStringAsync().ConfigureAwaitFalse(); return(MellatHelper.CreateRequestResult( response, invoice, _httpContextAccessor.HttpContext, _gatewayOptions, _messagesOptions.Value, account)); }