@Override
    public SpatialTrack jmeClone() {
        try {
            return (SpatialTrack) super.clone();
        } catch (CloneNotSupportedException exception) {
            throw new RuntimeException("Can't clone track", exception);
        }
    }
Create a shallow clone for the JME cloner.

@return a new track
jme3-core/src/main/java/com/jme3/animation/SpatialTrack.java