default T11 getOrNull11() {
        return get11().orElse(null);
    }
Returns the 11st element from this tuple or {@code null} if no such
element is present.

@return the 11st element from this tuple or {@code null} if no such
        element is present.
common-parent/tuple/src/main/java/com/speedment/common/tuple/nullable/Tuple23OfNullables.java