public function testIfWillTriggerAfterDelete()
 {
     $triggered = false;
     $model = new DocumentBaseAttributes();
     $afterDelete = function (ModelEvent $event) use(&$triggered) {
         $triggered = true;
     };
     Event::on($model, EntityManagerInterface::EventAfterDelete, $afterDelete);
     $saved = $model->save();
     $deleted = $model->delete();
     $this->assertTrue($deleted);
     $this->assertTrue($triggered);
     Event::off($model, EntityManagerInterface::EventAfterDelete, $afterDelete);
 }