You are reviewing a banking application and find a lost sink method called performTransactionf...) that sends requested transaction information (bill payment, fundstransfer, etc) to the back-end…

You are reviewing a banking application and find a lost sink method called performTransactionf...) that sends requested transaction information (bill payment, fundstransfer, etc) to the back-end COBOL application running on IBM System z mainframe that actually moves the money. Which type of custom rule should you create for this method?