[
    FullOpeningTag(
        Span(
            1,
            1,
        ),
    ),
    Expression {
        expression: ShellExec {
            parts: [
                Literal(
                    "Hello, world!",
                ),
            ],
        },
        ending: Semicolon(
            Span(
                3,
                16,
            ),
        ),
    },
]
