@Override
    public void cloneFields(Cloner cloner, Object original) {
        super.cloneFields(cloner, original);

        this.wires = cloner.clone(wires);
        this.points = cloner.clone(points);
        this.interBoneWires = cloner.clone(interBoneWires);
    }
@return the dotted line between bones (can be null)
jme3-core/src/main/java/com/jme3/scene/debug/SkeletonDebugger.java