{"ast_node_type":"variable","tokens":[{"end":83,"kind":"keyword","start":0,"text":"let"}]}
    let instance = ty::InstanceKind::FutureDropPollShim(def_id, proxy_ty, impl_ty);
) -> Body<'tcx> {
    let ty::Coroutine(coroutine_def_id, _) = impl_ty.kind() else {