public void TestCreateAndRetrieveToken()
        {
            var t = _defaultService.CreateToken(new TokenOptions()
            {
                Type = "bank",
                BankAccountNumber = "10333257392394",
                BankAccountType   = "CHECKING",
                BankRoutingNumber = "111000025",
                Name = "A Customer"
            });

            Assert.IsTrue(t.BankAccountNumber == "**********2394");
            Assert.IsTrue(t.BankRoutingNumber == "******025");
            Assert.IsTrue(t.BankAccountType == "CHECKING");
            var retrieved = _defaultService.GetToken(t.Id);

            Assert.IsTrue(t.BankAccountNumber == retrieved.BankAccountNumber);
        }