[
    Expression {
        expression: Array {
            items: [
                ArrayItem {
                    key: None,
                    value: LiteralInteger {
                        span: (
                            1,
                            8,
                        ),
                        value: "1",
                    },
                    unpack: false,
                    by_ref: false,
                },
                ArrayItem {
                    key: None,
                    value: LiteralInteger {
                        span: (
                            1,
                            11,
                        ),
                        value: "2",
                    },
                    unpack: false,
                    by_ref: false,
                },
                ArrayItem {
                    key: None,
                    value: Empty,
                    unpack: false,
                    by_ref: false,
                },
                ArrayItem {
                    key: None,
                    value: LiteralInteger {
                        span: (
                            1,
                            16,
                        ),
                        value: "4",
                    },
                    unpack: false,
                    by_ref: false,
                },
            ],
        },
        end: (
            1,
            18,
        ),
    },
]
