def maybe_redeem(self, sweep_info: 'SweepInfo') -> bool:
        """ returns False if it was dust """
        try:
            self.lnworker.wallet.txbatcher.add_sweep_input('lnwatcher', sweep_info)
        except BelowDustLimit:
            return False
        return True
 returns False if it was dust 
electrum/lnwatcher.py