getOrPut<T extends Object> method

T getOrPut<T extends Object>({ Object? key, required T ifAbsent(Lifecycle lifecycle), })

根据Type + key获取，如果不存在则创建信息

Implementation

T getOrPut<T extends Object>(
    {Object? key, required T Function(Lifecycle lifecycle) ifAbsent}) {
  final lifecycle = _lifecycle?.target;
  if (_isDestroyed || lifecycle == null) {
    throw Exception('extData has been destroyed.');
  }
  return _data.putIfAbsent(_genKey<T>(key: key), () => ifAbsent(lifecycle))
      as T;
}