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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 ok(self, data, schema=None, envelope=None):
 """ Gets a 200 response with the specified data. :param data: The content value. :param schema: The schema to serialize the data. :param envelope: The key used to envelope the data. :return: A Flask response object. """


        data = marshal(data, schema, envelope)
        return self.__make_response(data)