public function saved(Tree $model)
    {
        if ($model->{$model->getTreeColumn('path')} === '') { // If we just save() new node
            $model->{$model->getTreeColumn('path')} = $model->getKey() . '/';
            DB::connection($model->getConnectionName())->table($model->getTable())
                ->where($model->getKeyName(), '=', $model->getKey())
                ->update(
                    array(
                        $model->getTreeColumn('path') => $model->{$model->getTreeColumn('path')}
                    )
                );
        }
    }