Russ Cox <******@****.***> 1649018718 -0400

		{
			in:    list2,
			out:   []interface{}{&runtime.Unknown{Raw: list2.Items[0].Raw}, &runtime.Unknown{Raw: list2.Items[1].Raw}, list2.Items[2].Object},
			equal: true,
		},
		{
			in:  list3,
			out: []interface{}{list3.Items[0], list3.Items[1]},
		},
		{
			in:  list4,
			out: []interface{}{&list4.Items[0], &list4.Items[1], &list4.Items[2]},
		},
	}
	for i, test := range testCases {

// unresolved underlying type.
type Element3[TElem any] struct {
	next, prev *Element3[TElem]
	list *List3[TElem]
	Value TElem
}

func (e *Element3[TElem]) Next() *Element3[TElem] {
	if p := e.next; e.list != nil && p != &e.list.root {
		return p
	}
	return nil
}

type List3[TElem any] struct {
	root Element3[TElem]
	len  int
}

            .reverse()
            .<Iterable<@Nullable Integer>>nullsLast();
    List<@Nullable Integer> list1 = Lists.newArrayList();
    List<@Nullable Integer> list2 = Lists.newArrayList(1);
    List<@Nullable Integer> list3 = Lists.newArrayList(1, 1);
    List<@Nullable Integer> list4 = Lists.newArrayList(1, 2);
    List<@Nullable Integer> list5 = Lists.newArrayList(1, null, 2);
    List<@Nullable Integer> list6 = Lists.newArrayList(2);