## made optional in xcode9 beta 3 since it was replaced with newer API
!incorrect-protocol-member! PKPaymentAuthorizationViewControllerDelegate::paymentAuthorizationViewController:didAuthorizePayment:completion: is OPTIONAL and should NOT be abstract

## fixed in XAMCORE_4_0 - API break
!incorrect-protocol-member! PKPaymentAuthorizationViewControllerDelegate::paymentAuthorizationViewControllerWillAuthorizePayment: is OPTIONAL and should NOT be abstract