{"ast_node_type":"other","tokens":[{"end":26,"kind":"keyword","start":0,"text":"check_round_trip(vec);"}]}
    check_round_trip(vec);
    let vec = vec!['a', 'b', 'c', 'd', 'A', 'X', ' ', '#', 'Ö', 'Ä', 'µ', '€'];
}