Cviebrock\EloquentSluggable\SluggableObserver::saving PHP 메소드

public saving ( Model $model ) : boolean \| null
$model	Illuminate\Database\Eloquent\Model
리턴	boolean \| null

    public function saving(Model $model)
    {
        return $this->generateSlug($model, 'saving');
    }

SluggableObserver