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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 complete(self, msg):
 """Called to complete a transaction, usually when ProcessIO has shipped the IOCB off to some other thread or function."""

        if _debug: IOCB._debug("complete(%d) %r", self.ioID, msg)

        if self.ioController:
            # pass to controller
            self.ioController.complete_io(self, msg)
        else:
            # just fill in the data
            self.ioState = COMPLETED
            self.ioResponse = msg
            self.trigger()