public function GetReadOnlyProperties()
    {
        $properties = parent::GetReadOnlyProperties();
        array_push($properties, 'AccessKey');
        array_push($properties, 'PreregistrationData');
        array_push($properties, 'CardRegistrationURL');
        array_push($properties, 'CardId');
        array_push($properties, 'ResultCode');
        array_push($properties, 'ResultMessage');
        array_push($properties, 'Status');
        return $properties;
    }