[
    Echo {
        values: [
            Cast {
                span: (
                    3,
                    6,
                ),
                kind: String,
                value: Variable(
                    SimpleVariable(
                        SimpleVariable {
                            span: (
                                3,
                                15,
                            ),
                            name: "VAR",
                        },
                    ),
                ),
            },
        ],
    },
]
