{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"inner(&delimited.tts,"}]}
                    inner(&delimited.tts, locs, next_metavar, seq_depth);
                    locs.push(MatcherLoc::Token { token: open_token });
                    locs.push(MatcherLoc::Token { token: close_token });