{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"Delimited(DelimSpan,"}]}
    Delimited(DelimSpan, DelimSpacing, Delimited),
    /// A delimited sequence, e.g. `($e:expr)` (RHS) or `{ $e }` (LHS).
    /// A kleene-style repetition sequence, e.g. `$($e:expr)*` (RHS) or `$($e),*` (LHS).