code: protected function createEmptyDataFor(IAttribute $attribute, $parentId, $activate, $sort)
      {
          $result   = [
              'attr_id' => $attribute->get('id'),
              'pid'     => $parentId,
              'sorting' => $sort,
              'tstamp'  => time(),
              'enabled' => $activate ? '1' : ''
          ];
          $defaults = $attribute->getDefaultRenderSettings();
          foreach ($defaults->getKeys() as $key) {
              $result[$key] = $defaults->get($key);
          }
  
          return $result;
      }
docs: {@inheritDoc}
  
  @SuppressWarnings(PHPMD.UnusedFormalParameter)