/**
* Returns all items in specified list in an hierarchical structure
*/
public function getListItemsAsHierarchy($pm_list_name_or_id = null, $pa_options = null)
{
if (!($vn_item_id = $this->getRootListItemID($pm_list_name_or_id))) {
return null;
}
$t_items = new ca_list_items($vn_item_id);
return $t_items->getHierarchyAsList(null, $pa_options);
}