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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_max_age(self):
        '''Return the TTL of the current request.

        :returns: The TTL value for the current request.
        :rtype: int
        '''

        default_ttl = self.context.config.RESULT_STORAGE_EXPIRATION_SECONDS
        if self.context.request.max_age == 0:
            return self.context.request.max_age

        return default_ttl