{"ast_node_type":"import","tokens":[{"end":74,"kind":"keyword","start":0,"text":"//"}]}
                            // FIXME(eddyb) use a better `TyContext` here.
                        | ty::InstanceKind::AsyncDropGlueCtorShim(_def_id, ty) => {
                            self.visit_ty($(& $mutability)? *ty, TyContext::Location(location));