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@Override
public synchronized void addTreeModelListener(TreeModelListener l) {
listeners.add(l);
delegate.addTreeModelListener(l);
}
public synchronized void removeTreeModelListener(TreeModelListener l) {
listeners.remove(l);
delegate.removeTreeModelListener(l);
private synchronized Iterable<? extends TreeModelListener> getListeners() {
public void treeNodesInserted(TreeModelEvent e) {
throw new UnsupportedOperationException("Currently not supported.");
public void treeNodesRemoved(TreeModelEvent e) {
public void treeStructureChanged(TreeModelEvent e) {