class AtomicPositiveInteger extends Number {

    public final void set(int newValue) {
        if (newValue < 0) {
            throw new IllegalArgumentException("new value " + newValue + " < 0");
        }
        indexUpdater.set(this, newValue);
    }

    public  AtomicPositiveInteger();
    public  AtomicPositiveInteger(int initialValue);

}