    protected $atEppContact=null;

    function __construct(atEppContact $atEppContact, atEppExtensionChain $additionaEppExtension=null) {
        if(!is_null($additionaEppExtension)) {
            parent::__construct($additionaEppExtension);
        }
        $this->atEppContact = $atEppContact;
    }


    public function setEppRequestExtension(eppRequest $request,\DOMElement $extension)
    {
        $request->addExtension('xmlns:xsi', atEppConstants::w3SchemaLocation);
