addListenerUnsafe method

void Function() addListenerUnsafe(
  1. Type type,
  2. void listener(
    1. Object?
    )
)

Implementation

void Function() addListenerUnsafe(Type type, void Function(Object?) listener) {
  _listeners[type] ??= {};
  _listeners[type]!.add(listener);
  return () => _listeners[type]?.remove(listener);
}