public async Task CreateBankAccountTokenTest()
        {
            // Arrange
            var args = new BankAccountTokenCreateArguments();

            _stripe.Post(
                Arg.Is <StripeRequest <BankAccountTokenCreateArguments, Token> >(
                    a => a.UrlPath == "tokens" && a.Model == args), _cancellationToken)
            .Returns(Task.FromResult(new StripeResponse <Token>()));

            // Act
            var response = await _client.CreateBankAccountToken(args, _cancellationToken);

            // Assert
            response.Should().NotBeNull();
        }