validateCoupon method
Implementation
Future<ValidateCouponModel> validateCoupon(
String? userId, String amount, String couponCode,
[Config? config]) async {
throw UnimplementedError(
'validateCoupon() has not been implemented.');
}
Future<ValidateCouponModel> validateCoupon(
String? userId, String amount, String couponCode,
[Config? config]) async {
throw UnimplementedError(
'validateCoupon() has not been implemented.');
}