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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 get(self, method_name):
 """Get request proto instance for given methed name :param method_name: name for the method (e.g. ``Player.GetGameBadgeLevels#1``) :type method_name: :class:`str` :return: proto message instance, or :class:`None` if not found """

        proto = get_um(method_name)
        if proto is None:
            return None
        message = proto()
        self._data[message] = method_name
        return message