[
    Constant(
        Constant {
            start: (
                4,
                1,
            ),
            end: (
                4,
                16,
            ),
            entries: [
                ConstantEntry {
                    name: SimpleIdentifier {
                        span: (
                            4,
                            7,
                        ),
                        value: "a",
                    },
                    value: Identifier(
                        SimpleIdentifier(
                            SimpleIdentifier {
                                span: (
                                    4,
                                    11,
                                ),
                                value: "\null",
                            },
                        ),
                    ),
                },
            ],
        },
    ),
]
