Web Payments SDK Version: v1 # CardBrand Enumerates the payment card brands accepted by the Web Payments SDK Values # AMERICAN_EXPRESS String American Express # DISCOVER_DINERS String Diners Club card # DISCOVER String Discover card # JCB String Japan Credit Bureau (JCB) card # MASTERCARD String Mastercard # CHINA_UNIONPAY String UnionPay card # OTHER_BRAND String Unknown payment card brand # VISA String Visa card