Backpassing(
    [
        @0-1 Identifier(
            "x",
        ),
        @3-4 Identifier(
            "y",
        ),
    ],
    @8-23 Apply(
        @8-17 Var {
            module_name: "List",
            ident: "map2",
        },
        [
            @18-20 List(
                [],
            ),
            @21-23 List(
                [],
            ),
        ],
        Space,
    ),
    @25-30 SpaceBefore(
        BinOps(
            [
                (
                    @25-26 Var {
                        module_name: "",
                        ident: "x",
                    },
                    @27-28 Plus,
                ),
            ],
            @29-30 Var {
                module_name: "",
                ident: "y",
            },
        ),
        [
            Newline,
            Newline,
        ],
    ),
)