@Override
        protected void doInterpolate(double t) {
            transitionWeight = (float) Math.min(t, maxTransitionWeight);
        }
Callback from {@link com.jme3.util.clone.Cloner} to convert this
shallow-cloned action into a deep-cloned one, using the specified cloner
and original to resolve copied fields.

@param cloner the cloner that's cloning this action (not null)
@param original the action from which this action was shallow-cloned
(unused)
jme3-core/src/main/java/com/jme3/anim/tween/action/BlendableAction.java