@Override
	void replaceNode(Node oldNode, Node newNode) {
		if (oldNode == child) {
			child = newNode;
			newNode.parent = this;
			child.invalidate();
			winMgr.scheduleUpdate();
		}
	}
Returns the tool name of the tool.

@return the tool name of the tool.
Ghidra/Framework/Docking/src/main/java/docking/RootNode.java