public void addNode(int index, GTreeNode node) {
		Swing.runNow(() -> doAddNode(index, node));
	}
Adds the given node at the given index as a child to this node

@param index the index to place the node
@param node the node to add as a child of this node
Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/GTreeNode.java