una/modules/base/general/template/labels_tree.html

<ul class="bx-base-general-lables-tree-parent-__parent__">
	<bx_repeat:items>
		<li class="bx-def-padding-thd-topbottom">
			<bx_if:open>
				<i class="sys-icon caret-down sys-colored"></i> 
			</bx_if:open>	
			<bx_if:can_open>
				<i class="sys-icon caret-right sys-colored"></i> 
			</bx_if:can_open>
			<a href="__url__" class="__selected__">__value__</a>
			__child__
		</li>
	</bx_repeat:items>
</ul>