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

        managedBones = cloner.clone(managedBones);
        endModelTransform = cloner.clone(endModelTransform);
        meshToModel = cloner.clone(meshToModel);
        prevBoneTransforms = cloner.clone(prevBoneTransforms);
        startBoneTransforms = cloner.clone(startBoneTransforms);
        startModelTransform = cloner.clone(startModelTransform);
    }
Callback from {@link com.jme3.util.clone.Cloner} to convert this
shallow-cloned link into a deep-cloned one, using the specified cloner
and original to resolve copied fields.

@param cloner the cloner that's cloning this link (not null)
@param original the instance from which this link was shallow-cloned
(unused)
jme3-jbullet/src/main/java/com/jme3/bullet/animation/TorsoLink.java