Luminate CMS: How to render a list of CMS items with category heading? (this will work better once we will have an ability to sort lists by category)

category-headings-list.html

<t:set id="lastcat" value="null" />
<t:list>
	<t:list id="resource_type">
		<t:if test="lastcat != name">${label}<t:set id="lastcat" value="name" /></t:if>
	</t:list>
</t:list>