/**
  * @param  Object_Concrete $object
  * @return Object_Concrete
  */
 protected function getLatestVersion(Object_Concrete $object)
 {
     $modificationDate = $object->getModificationDate();
     $latestVersion = $object->getLatestVersion();
     if ($latestVersion) {
         $latestObj = $latestVersion->loadData();
         if ($latestObj instanceof Object_Concrete) {
             $object = $latestObj;
             $object->setModificationDate($modificationDate);
             // set de modification-date from published version to compare it in js-frontend
         }
     }
     return $object;
 }