/**
* Add hidden fieldset with custom hidden fields to edit page form
*/
protected function showFormBeforeText()
{
parent::showFormBeforeText();
// Make AjaxLogin work on EditPage without losing user changes - @author: Inez
$this->out->addHtml(Html::hidden('wpLogin', '') . "\n");
$this->out->addHtml("\n" . $this->renderHiddenFields() . "\n");
$this->out->addHtml("\n" . $this->renderCallbackNotices() . "\n");
}