protected function addLabelInput($lang_code)
{
$section = new ilFormSectionHeaderGUI();
$section->setTitle($this->lng->txt("meta_l_{$lang_code}"));
$this->addItem($section);
$item = new ilTextInputGUI($this->pl->txt('label'), "label_{$lang_code}");
$item->setValue($this->setting->getLabel($lang_code));
$item->setRequired(true);
$this->addItem($item);
}
