def schedule_force_closing(self, chan_id: bytes) -> 'asyncio.Task[bool]':
        """Schedules a task to force-close the channel and returns it.
        Network-related exceptions are suppressed.
        (automatic rebroadcasts will be scheduled)
        Note: this method is intentionally not async so that callers have a guarantee
              that the channel state is set immediately.
        """
        tx = self._force_close_channel(chan_id)
        return asyncio.create_task(self.network.try_broadcasting(tx, 'force-close'))
Schedules a task to force-close the channel and returns it.
        Network-related exceptions are suppressed.
        (automatic rebroadcasts will be scheduled)
        Note: this method is intentionally not async so that callers have a guarantee
              that the channel state is set immediately.
        
electrum/lnworker.py