static function fetchByContentObjectID($contentObjectID, $asObject = true, $contentObjectVersion = false)
 {
     $conds = array('contentobject_id' => $contentObjectID);
     if ($contentObjectVersion !== false) {
         $conds['contentobject_version'] = $contentObjectVersion;
     }
     return eZPersistentObject::fetchObjectList(eZContentObjectTreeNodeNoLanguage::definition(), null, $conds, null, null, $asObject);
 }