public void removeSelectionListener(SelectionListener lst) {
selectionSource.removeSelectionListener(lst);
}
private KongaTree createTree() {
KongaTreeModel model = new DefaultKongaTreeModel(new DefaultKongaTreeNode("Projects", true));
KongaTree tree = new KongaTree(model);
tree.setCellRenderer(new TreeNodeDecorRenderer());
tree.setRootVisible(false);
tree.setShowsRootHandles(true);
tree.setSelectionMode(SelectionMode.SINGLE_TREE_SELECTION);