1package foo:foo;
2
3interface simple-lists {
4  simple-list1: func(l: list<u32>);
5  simple-list2: func() -> list<u32>;
6  simple-list3: func(a: list<u32>, b: list<u32>) -> tuple<list<u32>, list<u32>>;
7  simple-list4: func(l: list<list<u32>>) -> list<list<u32>>;
8}
9
10world my-world {
11  import simple-lists;
12  export simple-lists;
13}
14