Modify the MPGS to accept Apple Pay

we need to enable Apple Pay with our current MPGS integration. Apple Pay is already supported by the bank via Direct Payment method. The bank has provided documentation ref on how to enable Apple Pay https://bsf.gateway.mastercard.com/api/documentation/integrationGuidelines/supportedFeatures/pickPaymentMethod/devicePayments/ApplePay.html?locale=en_US. The merchant ID and .cer is also created with Apple.

Now the only thing is to get the payment option enabled with current MPGS integration.