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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 lounge_update_license(self):
 """Download & install a license for your CDRouter system from the CDRouter Support Lounge. :return: :class:`system.Upgrade <system.Upgrade>` object :rtype: system.Upgrade """

        schema = UpgradeSchema()
        resp = self.service.post(self.base+'license/')
        return self.service.decode(schema, resp)