@Test
void toTuple7OfNullables() {

    final Function<Integer, Tuple7OfNullables<Integer, Integer, Integer, Integer, Integer, Integer, Integer>> mapper = TuplesOfNullables.toTupleOfNullables(i -> i + 0, i -> i + 1, i -> i + 2, i -> i + 3, i -> i + 4, i -> i + 5, i -> i + 6);
    assertTuple(mapper.apply(0), 7);
}