The <tc:treeMenu/> tag is deprecated, because it's easy to
build a tree menu with the <tc:tree/> tag.
You find an example as the navigation bar on the left side of this site.
The menu nodes can be build inside of <tc:treeNode/> with
<tc:link/>,
<tc:treeLabel/>,
<tc:treeIcon/> and
<tc:treeIndent/> tags.
It might be helpful to use custom classes here.
In this example, a click on a node has no effect.
<tc:tree value="#{treeController.sample}" ...>