{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"ty::Coroutine(def_id,"}]}
            ty::Coroutine(def_id, generic_args) => TyKind::RigidTy(RigidTy::Coroutine(
            ty::CoroutineClosure(..) => todo!("FIXME(async_closures): Lower these to SMIR"),
                tables.coroutine_def(*def_id),