[
    Function {
        name: Identifier {
            name: "foo",
        },
        attributes: [],
        params: [],
        body: [
            Global {
                vars: [
                    Identifier {
                        name: "a",
                    },
                    Identifier {
                        name: "b",
                    },
                ],
            },
        ],
        return_type: None,
        by_ref: false,
    },
]