{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"///"}]}
    /// A kleene-style repetition sequence, e.g. `$($e:expr)*` (RHS) or `$($e),*` (LHS).
    Delimited(DelimSpan, DelimSpacing, Delimited),
    Sequence(DelimSpan, SequenceRepetition),