@Override
	public void removeTreeModelListener(TreeModelListener l) {
		listeners.remove(l);
	}
Sets the models root node. NOTE: this is intended to only be called from the {@link GTree}
@param newRoot the new tree model root.  It will either be the actual root or a root
of a filtered sub-tree
Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/internal/GTreeModel.java