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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 unauthorize_guest(self, guest_mac):
 """ Unauthorize a guest based on his MAC address. Arguments: guest_mac -- the guest MAC address : aa:bb:cc:dd:ee:ff """

        cmd = 'unauthorize-guest'
        js = {'mac': guest_mac}

        return self._run_command(cmd, params=js)