/**
  * Return useable attribute ids
  *
  * @param string[] $attributeCodes
  *
  * @return integer[]
  */
 protected function getAttributeIds($attributeCodes = null)
 {
     // as now only attributes usable as grid filters are usable in the grid,
     // we need to add the variant group axes (even if they are not usable as grid filter)
     // as usable in the grid (to be displayed in the columns)
     $attributeIds = array_merge($this->attributeRepository->getAttributeIdsUseableInGrid($attributeCodes), $this->getAttributeIdsFromProductGroupAxes());
     return $attributeIds;
 }
 /**
  * Return useable attribute ids
  *
  * @param string[] $attributeCodes
  *
  * @return integer[]
  */
 protected function getAttributeIds($attributeCodes = null)
 {
     $attributeIds = $this->attributeRepository->getAttributeIdsUseableInGrid($attributeCodes);
     return $attributeIds;
 }