{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"RegionNameSource::AnonRegionFromArgument(RegionNameHighlight::MatchedHirTy(span))"}]}
            RegionNameSource::AnonRegionFromArgument(RegionNameHighlight::MatchedHirTy(span))
            }
            | RegionNameSource::AnonRegionFromOutput(RegionNameHighlight::MatchedHirTy(span), _)