snapshots method
Implementation
Stream<InAppQuerySnapshot> snapshots() {
final n = _db._addNotifier(path);
Future.delayed(const Duration(seconds: 1)).whenComplete(_notify);
return Stream.multi((c) {
void update() => c.add(n.value ?? InAppQuerySnapshot(id));
n.addListener(update);
c.onCancel = () => n.removeListener(update);
});
}