public static void dump( String indent, Control ctl ) {
        System.out.println(indent + objectToString(ctl));
        if( ctl instanceof AbstractControl ) {
            System.out.println(indent + "  spatial:" + objectToString(((AbstractControl)ctl).getSpatial()));
        }
    }
Debug dump to check structure and identity
jme3-examples/src/main/java/jme3test/app/TestCloneSpatial.java