[
    Function(
        Function {
            start: (
                3,
                1,
            ),
            end: (
                7,
                1,
            ),
            name: Identifier {
                start: (
                    3,
                    10,
                ),
                name: "a",
                end: (
                    3,
                    11,
                ),
            },
            attributes: [],
            parameters: FunctionParameterList {
                start: (
                    3,
                    11,
                ),
                end: (
                    3,
                    13,
                ),
                members: [],
            },
            return_type: Some(
                Null,
            ),
            by_ref: false,
            body: [
                Echo {
                    values: [
                        LiteralString {
                            value: "looping..\n",
                        },
                    ],
                },
                Return {
                    value: Some(
                        Null,
                    ),
                },
            ],
        },
    ),
    Expression {
        expr: AssignmentOperation(
            Assign {
                left: Variable(
                    Variable {
                        start: (
                            9,
                            1,
                        ),
                        name: "bar",
                        end: (
                            9,
                            6,
                        ),
                    },
                ),
                span: (
                    9,
                    6,
                ),
                right: Call {
                    target: Identifier(
                        Identifier {
                            start: (
                                9,
                                8,
                            ),
                            name: "a",
                            end: (
                                9,
                                9,
                            ),
                        },
                    ),
                    args: [
                        Arg {
                            name: None,
                            value: VariadicPlaceholder,
                            unpack: false,
                        },
                    ],
                },
            },
        ),
    },
    Label {
        label: Identifier {
            start: (
                11,
                1,
            ),
            name: "foo",
            end: (
                11,
                4,
            ),
        },
    },
    Expression {
        expr: Call {
            target: Variable(
                Variable {
                    start: (
                        12,
                        5,
                    ),
                    name: "bar",
                    end: (
                        12,
                        9,
                    ),
                },
            ),
            args: [],
        },
    },
    Goto {
        label: Identifier {
            start: (
                13,
                10,
            ),
            name: "foo",
            end: (
                13,
                13,
            ),
        },
    },
]