{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"T!['(']"}]}
                    T!['('] => tt::DelimiterKind::Parenthesis,
                    _ if loc.def.is_proc_macro() => tt::DelimiterKind::Invisible,
                    T!['['] => tt::DelimiterKind::Bracket,