[
    Expression {
        expression: PropertyFetch {
            target: Variable(
                SimpleVariable(
                    SimpleVariable {
                        span: (
                            1,
                            7,
                        ),
                        name: "a",
                    },
                ),
            ),
            property: Variable(
                VariableVariable(
                    VariableVariable {
                        span: (
                            1,
                            11,
                        ),
                        variable: SimpleVariable(
                            SimpleVariable {
                                span: (
                                    1,
                                    12,
                                ),
                                name: "b",
                            },
                        ),
                    },
                ),
            ),
        },
        end: (
            1,
            14,
        ),
    },
]
