def reset_algorithm(self, parameter):
        """
        Reset the algorithm text to its original definition from MDB
        
        :param str parameter: Either a fully-qualified XTCE name or an alias
                              in the format ``NAMESPACE/NAME``.
        """
        req = mdb_pb2.ChangeAlgorithmRequest()
        
        req.action = mdb_pb2.ChangeAlgorithmRequest.RESET        
        
        url = '/mdb/{}/{}/algorithms/{}'.format(
            self._instance, self._processor, parameter)
        response = self._client.post_proto(url, data=req.SerializeToString())