Backpassing(
    [
        |L 0-0, C 0-1| Identifier(
            "x",
        ),
        |L 0-0, C 3-4| Identifier(
            "y",
        ),
    ],
    |L 0-0, C 8-23| Apply(
        |L 0-0, C 8-17| Var {
            module_name: "List",
            ident: "map2",
        },
        [
            |L 0-0, C 18-20| List(
                [],
            ),
            |L 0-0, C 21-23| List(
                [],
            ),
        ],
        Space,
    ),
    |L 2-2, C 0-5| SpaceBefore(
        BinOps(
            [
                (
                    |L 2-2, C 0-1| Var {
                        module_name: "",
                        ident: "x",
                    },
                    |L 2-2, C 2-3| Plus,
                ),
            ],
            |L 2-2, C 4-5| Var {
                module_name: "",
                ident: "y",
            },
        ),
        [
            Newline,
            Newline,
        ],
    ),
)