{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"(accepted,"}]}
    (accepted, loop_break_value, "1.19.0", Some(37339)),
    /// Allows `break {expr}` with a value inside `loop`s.
    /// Allows use of `?` as the Kleene "at most one" operator in macros.