src/main/java/org/organicdesign/fp/tuple/Tuple9.java
public static <A,B,C,D,E,F,G,H,I> Tuple9<A,B,C,D,E,F,G,H,I>
    of(A a, B b, C c, D d, E e, F f, G g, H h, I i) {
        return new Tuple9<>(a, b, c, d, e, f, g, h, i);
    }
public static <A,B,C,D,E,F,G,H,I> Tuple9<A,B,C,D,E,F,G,H,I>
    of(A a, B b, C c, D d, E e, F f, G g, H h, I i) {
        return new Tuple9<>(a, b, c, d, e, f, g, h, i);
    }
Public static factory method