{"ast_node_type":"variable","tokens":[{"end":77,"kind":"keyword","start":0,"text":"let"}]}
            let ty::Alias(ty::Opaque, alias_ty) = *ty.kind() else { bug!() };
        fn reveal_inner<'tcx>(cx: &RustcPatCtxt<'_, 'tcx>, ty: Ty<'tcx>) -> RevealedTy<'tcx> {
            if let Some(local_def_id) = alias_ty.def_id.as_local() {