* string options: 'name', 'title' (default), 'order' (registration order)
* php callback: a compare function for usort
* priority: the order the items were registered
- * handler: the page handler to build action URLs
- * entity: an ElggEntity to use to build action URLs
- * class: the class for the entire menu.
+ * handler: string the page handler to build action URLs
+ * entity: ElggEntity to use to build action URLs
+ * class: string the class for the entire menu.
+ * show_section_headers: bool show headers before menu sections.
*
* @return string
* @since 1.8.0