FActorFolderHierarchy ( [ISceneOutlinerMode](API\Editor\SceneOutliner\ISceneOutlinerMode) * InMode, const [TWeakObjectPtr](API\Runtime\Core\UObject\TWeakObjectPtr)< [UWorld](API\Runtime\Engine\Engine\UWorld) > & World, const [FFolder::FRootObject](API\Runtime\Engine\FFolder\FRootObject) & InRootObject )