public function getParentNode($dsId)
    {
        $parentDsId = $this->getParentDsId($dsId);

        if (null === $parentDsId) {
            return null;
        }

        return $this->dsIdMap[$parentDsId];
    }
public function getParentNode($dsId)
    {
        $parentDsId = $this->getParentDsId($dsId);

        if (null === $parentDsId) {
            return null;
        }

        return $this->dsIdMap[$parentDsId];
    }
public function getParentNode ( $ dsId ) { $ parentDsId = $ this -> getParentDsId ( $ dsId ) ; if ( null === $ parentDsId ) { return null ; } return $ this -> dsIdMap [ $ parentDsId ] ; }
Get parent node by node ds_id.

@param string $dsId

@return ElementtypeStructureNode
Get parent node by node ds_id .