When(
    |L 0-0, C 5-6| Var {
        module_name: "",
        ident: "x",
    },
    [
        WhenBranch {
            patterns: [
                |L 1-1, C 1-2| SpaceBefore(
                    NumLiteral(
                        "1",
                    ),
                    [
                        Newline,
                    ],
                ),
            ],
            value: |L 1-1, C 6-7| Num(
                "2",
            ),
            guard: None,
        },
        WhenBranch {
            patterns: [
                |L 2-2, C 1-2| SpaceBefore(
                    NumLiteral(
                        "3",
                    ),
                    [
                        Newline,
                    ],
                ),
            ],
            value: |L 2-2, C 6-7| Num(
                "4",
            ),
            guard: None,
        },
    ],
)