private static function renderTextAreaReadable(RenderReadablePropertyValueEvent $event, $property, $extra, $value)
    {
        if ((empty($extra['allowHtml']) && empty($extra['preserveTags']))
            || (null !== $event->getRendered())
            || ('textarea' !== $property->getWidgetType())) {
            return;
        }

        $event->setRendered(\nl2br_html5(StringUtil::specialchars($value)));
    }