I have a tree that renders a two level hierarchy (e.g. State/City). Each state has a collection of cities. State and city have a boolean flag 'visible'. Without modifying the collection directly, can I somehow make is so that states/cities with 'visible=false' do not show in the tree at all? When I set the label/icon or whole thing's visible attribute to false, I end up with a 'blank' node/leaf.
Thanks, - Todd
