code: protected function loadMetaAttributes()
      {
          if (!array_key_exists('metaAttributes', $this->relations)) {
              $this->reloadMetaAttributes();
          }
  
          $attributes = $this->getRelation('metaAttributes');
  
          if (!$attributes instanceof AttributeBag) {
              $this->setRelation('metaAttributes', (new Attribute)->newBag($attributes->all()));
          }
      }
docs: Load meta attributes relation.
  
  @return void