public void createCreditCardAccounts()
        {
            AgrAccount account = builder.newCreditCardAccount("\"XYZカード\", \"DUMMY\", \"123456\"");

            Assert.NotNull(account);
            Assert.True(account.isCreditCard);
            Assert.AreEqual("CARD_XYZ1", account.accountId);
            Assert.IsTrue(account.hasBalance);
            Assert.AreEqual(-123456, account.balance);

            // 違うカード名
            account = builder.newCreditCardAccount("\"XYZZカード\", \"DUMMY\", \"654321\"");
            Assert.NotNull(account);
            Assert.True(account.isCreditCard);
            Assert.AreEqual("CARD_XYZZ1", account.accountId);
            Assert.IsTrue(account.hasBalance);
            Assert.AreEqual(-654321, account.balance);

            // 1番目と同じカード名
            account = builder.newCreditCardAccount("\"XYZカード\", \"DUMMY\", \"654321\"");
            Assert.NotNull(account);
            Assert.True(account.isCreditCard);
            Assert.AreEqual("CARD_XYZ2", account.accountId);
            Assert.IsTrue(account.hasBalance);
            Assert.AreEqual(-654321, account.balance);
        }