blueCubeWindow.setPosition(WindowingSystem.Position.LEFT);
ws.addWindow(blueCubeWindow);
WindowSpec greenCubeWindow = new WindowSpec("green", "Green", createContent("Green content", "green", "white"), "30%");
greenCubeWindow.setPosition(WindowingSystem.Position.RIGHT);
ws.addWindow(greenCubeWindow);
WindowSpec greenCubeWindow2 = new WindowSpec("orange", "Orange", createContent("Orange content", "orange", "black"), "30%");
greenCubeWindow2.setPosition(WindowingSystem.Position.BOTTOM);
ws.addWindow(greenCubeWindow2);