{"ast_node_type":"variable","tokens":[{"end":69,"kind":"keyword","start":0,"text":"let"}]}
                        let name = self.infcx.tcx.item_name(*def_id);
                    ty::FnDef(def_id, _) => {
                        let identity_args = GenericArgs::identity_for_item(self.infcx.tcx, *def_id);