public function appendStatusFooter(XMLElement &$wrapper)
    {
        $fieldset = new XMLElement('fieldset');
        $div = new XMLElement('div', null, array('class' => 'two columns'));

        $this->appendRequiredCheckbox($div);
        $this->appendShowColumnCheckbox($div);

        $fieldset->appendChild($div);
        $wrapper->appendChild($fieldset);
    }