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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 confirmation(self, apdu):
 """This function is called when the application has provided a response and needs it to be sent to the client."""

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

        # check to see we are in the correct state
        if self.state != AWAIT_RESPONSE:
            if _debug: ServerSSM._debug("    - warning: not expecting a response")

        # abort response
        if (apdu.apduType == AbortPDU.pduType):
            if _debug: ServerSSM._debug("    - abort")

            self.set_state(ABORTED)

            # send the response to the device
            self.response(apdu)
            return

        # simple response
        if (apdu.apduType == SimpleAckPDU.pduType) or (apdu.apduType == ErrorPDU.pduType) or (apdu.apduType == RejectPDU.pduType):
            if _debug: ServerSSM._debug("    - simple ack, error, or reject")

            # transaction completed
            self.set_state(COMPLETED)

            # send the response to the device
            self.response(apdu)
            return

        # complex ack
        if (apdu.apduType == ComplexAckPDU.pduType):
            if _debug: ServerSSM._debug("    - complex ack")

            # save the response and set the segmentation context
            self.set_segmentation_context(apdu)

            # the segment size is the minimum of the size of the largest packet
            # that can be delivered to the client and the largest it can accept
            if (not self.device_info) or (self.device_info.maxNpduLength is None):
                self.segmentSize = self.maxApduLengthAccepted
            else:
                self.segmentSize = min(self.device_info.maxNpduLength, self.maxApduLengthAccepted)
            if _debug: ServerSSM._debug("    - segment size: %r", self.segmentSize)

            # compute the segment count
            if not apdu.pduData:
                # always at least one segment
                self.segmentCount = 1
            else:
                # split into chunks, maybe need one more
                self.segmentCount, more = divmod(len(apdu.pduData), self.segmentSize)
                if more:
                    self.segmentCount += 1
            if _debug: ServerSSM._debug("    - segment count: %r", self.segmentCount)

            # make sure we support segmented transmit if we need to
            if self.segmentCount > 1:
                if _debug: ServerSSM._debug("    - segmentation required, %d segments", self.segmentCount)

                # make sure we support segmented transmit
                if self.segmentationSupported not in ('segmentedTransmit', 'segmentedBoth'):
                    if _debug: ServerSSM._debug("    - server can't send segmented responses")
                    abort = self.abort(AbortReason.segmentationNotSupported)
                    self.response(abort)
                    return

                # make sure client supports segmented receive
                if not self.segmented_response_accepted:
                    if _debug: ServerSSM._debug("    - client can't receive segmented responses")
                    abort = self.abort(AbortReason.segmentationNotSupported)
                    self.response(abort)
                    return

                # make sure we dont exceed the number of segments in our response
                # that the client said it was willing to accept in the request
                if (self.maxSegmentsAccepted is not None) and (self.segmentCount > self.maxSegmentsAccepted):
                    if _debug: ServerSSM._debug("    - client can't receive enough segments")
                    abort = self.abort(AbortReason.apduTooLong)
                    self.response(abort)
                    return

            # initialize the state
            self.segmentRetryCount = 0
            self.initialSequenceNumber = 0
            self.actualWindowSize = None

            # send out the first segment (or the whole thing)
            if self.segmentCount == 1:
                self.response(apdu)
                self.set_state(COMPLETED)
            else:
                self.response(self.get_segment(0))
                self.set_state(SEGMENTED_RESPONSE, self.segmentTimeout)

        else:
            raise RuntimeError("invalid APDU (4)")