@Test
 public void shouldConvertToList() {
   final Value<Integer> value = of(1, 2, 3);
   final List<Integer> list = value.toList();
   if (value.isSingleValued()) {
     assertThat(list).isEqualTo(List.of(1));
   } else {
     assertThat(list).isEqualTo(List.of(1, 2, 3));
   }
 }