@Override
    public void simpleInitApp() {
        Box box = new Box(1, 1, 1);
        Geometry geom = new Geometry("Box", box);
        mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
        mat.setTexture("ColorMap", assetManager.loadTexture("Interface/Logo/Monkey.jpg"));
        geom.setMaterial(mat);
        rootNode.attachChild(geom);
    }
Demonstrate what happens if you use a deleted texture with OpenGL.

If assertions are enabled, an AssertionError is thrown NativeObjectManager.

@author Kirill Vainer
jme3-examples/src/main/java/jme3test/app/TestUseAfterFree.java