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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 create(self, msgtype, *args, **kwargs):
        ''' Create a new Message instance for the given type.

        Args:
            msgtype (str) :

        '''
        if msgtype not in self._messages:
            raise ProtocolError("Unknown message type %r for protocol version %s" % (msgtype, self._version))
        return self._messages[msgtype].create(*args, **kwargs)