retainAll method
Async removes all elements from the set that is not in elements
.
Implementation
@override
Future<void> retainAll(Iterable<Object?> elements) async {
return Future<void>(() => throw UnsupportedError('Unmodifiable operation'));
}
Async removes all elements from the set that is not in elements
.
@override
Future<void> retainAll(Iterable<Object?> elements) async {
return Future<void>(() => throw UnsupportedError('Unmodifiable operation'));
}