void setGroupPath(ProgramNode node) {
		TreeNode[] pnodes = node.getPath();
		String[] names = new String[pnodes.length];

		for (int i = 0; i < pnodes.length; i++) {
			ProgramNode n = (ProgramNode) pnodes[i];
			names[i] = n.toString();
		}
		node.setGroupPath(new GroupPath(names));
	}
Set the GroupPath object in the given node.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/programtree/ProgramDnDTree.java