{"ast_node_type":"function","tokens":[{"end":83,"kind":"keyword","start":0,"text":"assert_eq!(actual,"}]}
    assert_eq!(actual, vec![("fn main() {}", Some("fn".into())), ("main", None),]);
    let actual = tags.into_iter().map(|(range, attr)| (&text[range], attr)).collect::<Vec<_>>();
}