/**
  * @param \Illuminate\Database\Eloquent\Model $model
  */
 public function indexer(Model $model)
 {
     // Check model if has instance of ElasticIndexer
     if (!$model instanceof ElasticIndexer) {
         return;
     }
     // Boot model for index
     $model->indexModel();
     $this->indexer = new Index($model);
     $this->indexer->save();
 }