@Override
    public Object jmeClone() {
        NormalRecalcControl control = (NormalRecalcControl)super.jmeClone();
        control.setEnabled(true);
        return control;
    }
Called internally by com.jme3.util.clone.Cloner.  Do not call directly.
jme3-terrain/src/main/java/com/jme3/terrain/geomipmap/NormalRecalcControl.java