Illuminate\Database\Eloquent\Model::getObservableEvents PHP Method

    public function getObservableEvents()
    {
        return array_merge(['creating', 'created', 'updating', 'updated', 'deleting', 'deleted', 'saving', 'saved', 'restoring', 'restored'], $this->observables);
    }

 /**
  * Merges new validation events into observable events for models
  * @return array
  */
 public function getObservableEvents()
 {
     return array_merge(parent::getObservableEvents(), array('validating', 'validated'));
 }