public function getPostalCode()
    {
        $node = $this->response->getFirst('contact:addr/contact:pc', $this->node);
        if ($node === null) {
            return null;
        }

        return $node->nodeValue;
    }
public function getPostalCode()
    {
        $node = $this->response->getFirst('contact:addr/contact:pc', $this->node);
        if ($node === null) {
            return null;
        }

        return $node->nodeValue;
    }
public function getPostalCode ( ) { $ node = $ this -> response -> getFirst ( 'contact:addr/contact:pc' , $ this -> node ) ; if ( $ node === null ) { return null ; } return $ node -> nodeValue ; }
The contact's postal code.

@return string|null
The contact s postal code .