class SyncX:
on_started: SyncSignalT = SyncSignal()
on_stopped: SyncSignalT = SyncSignal()
def __init__(self):
self.on_started = self.on_started.with_default_sender(self)
self.on_stopped = self.on_stopped.with_default_sender(self)
class X:
sig = Signal()
sig2 = SyncSignal()