on method Null safety
Listens for events.
Implementation
Stream<FWEvent> on() {
return _streamController.stream
.where((event) => event is FWEvent)
.cast<FWEvent>();
}Listens for events.
Stream<FWEvent> on() {
return _streamController.stream
.where((event) => event is FWEvent)
.cast<FWEvent>();
}