[
    Expression {
        expr: NullsafePropertyFetch {
            target: Variable(
                Variable {
                    start: (
                        1,
                        7,
                    ),
                    name: "a",
                    end: (
                        1,
                        9,
                    ),
                },
            ),
            property: Identifier(
                Identifier {
                    start: (
                        1,
                        12,
                    ),
                    name: "b",
                    end: (
                        1,
                        13,
                    ),
                },
            ),
        },
    },
]