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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 logic(self, data):
 """Parse the data and respond to it appropriately. Response is returned to the caller and has to be sent data as a mysensors command string. """

        try:
            msg = Message(data, self)
            msg.validate(self.protocol_version)
        except (ValueError, vol.Invalid) as exc:
            _LOGGER.warning('Not a valid message: %s', exc)
            return None

        message_type = self.const.MessageType(msg.type)
        handler = message_type.get_handler(self.handlers)
        ret = handler(msg)
        ret = self._route_message(ret)
        ret = ret.encode() if ret else None
        return ret