observe method
Implementation
@override
Dispose observe(MapChangeListener<K, V> listener, {bool? fireImmediately}) {
final dispose = _listeners.add(listener);
if (fireImmediately == true) {
_map.forEach(_reportAdd);
}
return dispose;
}
@override
Dispose observe(MapChangeListener<K, V> listener, {bool? fireImmediately}) {
final dispose = _listeners.add(listener);
if (fireImmediately == true) {
_map.forEach(_reportAdd);
}
return dispose;
}