code: def authorize_guest(self, guest_mac, minutes, up_bandwidth=None, down_bandwidth=None, byte_quota=None, ap_mac=None):
          
          cmd = 'authorize-guest'
          js = {'mac': guest_mac, 'minutes': minutes}
  
          if up_bandwidth:
              js['up'] = up_bandwidth
          if down_bandwidth:
              js['down'] = down_bandwidth
          if byte_quota:
              js['bytes'] = byte_quota
          if ap_mac and self.version != 'v2':
              js['ap_mac'] = ap_mac
  
          return self._run_command(cmd, params=js)
docs: Authorize a guest based on his MAC address.
  
          Arguments:
              guest_mac     -- the guest MAC address : aa:bb:cc:dd:ee:ff
              minutes       -- duration of the authorization in minutes
              up_bandwith   -- up speed allowed in kbps (optional)
              down_bandwith -- down speed allowed in kbps (optional)
              byte_quota    -- quantity of bytes allowed in MB (optional)
              ap_mac        -- access point MAC address (UniFi >= 3.x) (optional)