def onJoin(self, details):
# noinspection PyUnusedLocal
def on_event(*arg, **kwargs):
pass
d2 = self.subscribe(on_event, u"com.example.topic1")
def ok(_):
LoopMixin.resolve_future(d, None)
def error(err):
LoopMixin.reject_future(d, err)
LoopMixin.add_future_callbacks(d2, ok, error)
