public function create()
    {
        $type = NodeType::getByHandle('file');
        if (!is_object($type)) {
            NodeType::add('file');
        }
        $type = NodeType::getByHandle('file_folder');
        if (!is_object($type)) {
            NodeType::add('file_folder');
        }
        $type = NodeType::getByHandle('search_preset');
        if (!is_object($type)) {
            NodeType::add('search_preset');
        }
        $type = TreeType::getByHandle('file_manager');
        if (!is_object($type)) {
            TreeType::add('file_manager');
        }

        $manager = FileManager::get();
        if (!is_object($manager)) {
            $manager = FileManager::add();
        }

        return $manager;
    }