@Override
	public void addNode(GTreeNode node) {
		if (isLoaded()) {
			super.addNode(node);
		}
	}
Sets this lazy node back to the "unloaded" state such that if
its children are accessed, it will reload its children as needed.
Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/GTreeLazyNode.java