public function addFileTypeSetsToCategory(\Category $category, $dbResultCategory)
  {
    $arrFileTypesOfSets = array();
    $arrFileTypeSetIds = deserialize($dbResultCategory->file_type_sets);
    if (!empty($arrFileTypeSetIds))
    {
      foreach($arrFileTypeSetIds as $arrFileTypeSetId)
      {
        $arrFileTypesOfSets = array_merge($arrFileTypesOfSets, explode(",", $this->arrPublishedFileTypeSets[$arrFileTypeSetId]));
      }
    
    }
    
    $arrFileTypes = \DmsUtils::getUniqueFileTypes($category->fileTypes, $arrFileTypesOfSets);
    
    $category->fileTypes = implode(",", $arrFileTypes);
    return $category;
  }