retainAll method

  1. @override
Future<void> retainAll(
  1. Iterable<Object?> elements
)
override

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'));
}