{"ast_node_type":"struct","tokens":[{"end":98,"kind":"keyword","start":0,"text":"DefKind::Ctor(CtorOf::Struct,"}]}
                    DefKind::Ctor(CtorOf::Struct, _) => "construct this tuple struct".to_string(),
                DefIdOrName::DefId(def_id) => match self.tcx.def_kind(def_id) {
                    DefKind::Ctor(CtorOf::Variant, _) => "construct this tuple variant".to_string(),