In nxmc we use Eclipse viewers, so code to got parent/child relations is actually decoupled into separate pieces. Simple code to print object tree, which you can use as an example:

	private void printObject(GenericObject object, int level)
	{
		for(int i = 0; i < level; i++)
			System.out.print(' ');
		System.out.println(object.getObjectName());

		for(GenericObject o : object.getChildsAsArray())
			printObject(o, level + 2);
	}

	public void main() throws Exception
	{
		final NXCSession session = connect();  // obtain session somehow

		session.syncObjects();

		GenericObject object = session.findObjectById(1, EntireNetwork.class);

		printObject(object, 0);

		session.disconnect();
	}

Best regards,
Victor