void updateGroupPath(ProgramNode node) {
		// update the module path
		setGroupPath(node);
		reloadNode(node);
		int nchild = node.getChildCount();
		// update my children's module paths
		for (int i = 0; i < nchild; i++) {
			ProgramNode child = (ProgramNode) node.getChildAt(i);
			updateGroupPath(child);
		}
	}
Get the group paths that correspond to the nodes that are
selected.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/programtree/ProgramDnDTree.java