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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_message_by_id(self, message_id):
 """ Fetch a message :param message_id: Message ID :type message_id: str :return: Message or False :rtype: Message """

        result = self.wapi_functions.getMessageById(message_id)

        if result:
            result = factory_message(result, self)

        return result