Create Create is a static method that creates an instance and returns an ISwpTrmIf_1 interface Start The Start method initializes the created instance and starts a listener if desired and if not already started. Open This is the first method call that actually communicates with the terminal. It sends a LoginRequest which is needed before any other request. Payment The Payment method is called to make a purchase transaction when the amount is known. Refund The Refund method sends a PaymentRequest for refund and should be called when the amount is known. Abort This method will send an AbortRequest for the last issued request to the terminal. GetLastTransactionResult GetLastTransactionResult / GetLastTransactionResultAsync is useful if the original payment or refund response is lost Close This method sends a LogoutRequest to terminate the login session and allow for maintenance.
