protected function renderList(ItemInterface $item, array $attributes, array $options)
{
/**
* Return an empty string if any of the following are true:
* a) The menu has no children eligible to be displayed
* b) The depth is 0
* c) This menu item has been explicitly set to hide its children
*/
if (!$item->hasChildren() || 0 === $options['depth'] || !$item->getDisplayChildren()) {
return '';
}
$html = $this->format('<ul' . $this->renderHtmlAttributes($attributes) . '>', 'ul', $item->getLevel(), $options);
$html .= $this->renderChildren($item, $options);
$html .= $this->format('</ul>', 'ul', $item->getLevel(), $options);
return $html;
}