{"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"CaptureBy::Ref"}]}
            CaptureBy::Ref => CaptureBy::Ref,
        match capture_clause {
            CaptureBy::Use { use_kw } => CaptureBy::Use { use_kw: self.lower_span(use_kw) },