private BitmapText createLabelText(int x, int y, String text) {
        BitmapText bmp = new BitmapText(guiFont);
        bmp.setText(text);
        bmp.setLocalTranslation(x, settings.getHeight() - y, 0);
        bmp.setColor(ColorRGBA.Red);
        guiNode.attachChild(bmp);
        return bmp;
    }
This test specifically validates the corrected PBR rendering when combined
with instancing, as addressed in issue #2435. 

It creates an InstancedNode
with a PBR-materialized Box to ensure the fix in PBRLighting.vert correctly
handles world position calculations for instanced geometry.
jme3-examples/src/main/java/jme3test/scene/instancing/TestInstanceNodeWithPbr.java