static <E> Subscription observeQuasiChanges(
ObservableList<? extends E> list, QuasiChangeObserver<? super E> observer) {
if (list instanceof LiveList) {
LiveList<? extends E> lst = (LiveList<? extends E>) list;
return lst.observeQuasiChanges(observer);
} else {
ListChangeListener<E> listener =
ch -> {
QuasiListChange<? extends E> change = QuasiListChange.from(ch);
observer.onChange(change);
};
list.addListener(listener);
return () -> list.removeListener(listener);
}
}
public void cleanup() {
observableList.removeListener(this);
}