class Tuple5 extends Tuple4<T1, T2, T3, T4> implements Tuple {

    @Override
    public Object nth(int index) {
        assertIndexInBounds(index);

        if (index == 4) {
            return item5;
        } else {
            return super.nth(index);
        }
    }

      Tuple5(T1 a, T2 b, T3 c, T4 d, T5 e);

}