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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def request(self, apdu):
 """This function is called by transaction functions to send to the application."""

        if _debug: ServerSSM._debug("request %r", apdu)

        # make sure it has a good source and destination
        apdu.pduSource = self.pdu_address
        apdu.pduDestination = None

        # send it via the device
        self.ssmSAP.sap_request(apdu)