{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"MatcherLoc::SequenceSep"}]}
            MatcherLoc::SequenceSep { .. } => None,
            MatcherLoc::SequenceKleeneOpNoSep { .. } => None,
            MatcherLoc::SequenceKleeneOpAfterSep { .. } => None,