code: def manual_update_license(self, fd, filename='cdrouter.lic'):
          
          schema = UpgradeSchema()
          resp = self.service.post(self.base+'license/',
                                   files={'file': (filename, fd)})
          return self.service.decode(schema, resp)
docs: Update the license on your CDRouter system manually by uploading a
          .lic license from the CDRouter Support Lounge.
  
          :param fd: File-like object to upload.
          :param filename: (optional) Filename to use for license as string.
          :return: :class:`system.Upgrade <system.Upgrade>` object
          :rtype: system.Upgrade