add method

@override Future<bool> add(Object disposable)

Adds a disposable to this container or disposes it if this bag has been disposed or is disposing.

disposable must be a StreamSubscription or a Sink.

Returns true if disposable was added successfully.

Implementation

@override
Future<bool> add(Object disposable) async {
  _guardType(disposable);

  final resources = _validResourcesOrNull();
  if (resources == null) {
    await _disposeOne(disposable);
    return false;
  }
  return resources.add(disposable);
}