(8, blinded_route_hints, optional_vec),
(9, final_cltv_expiry_delta, (default_value, default_final_cltv_expiry_delta)),
(11, previously_failed_blinded_path_idxs, optional_vec),
(8, blinded_route_hints, optional_vec),
(9, final_cltv_expiry_delta, (default_value, default_final_cltv_expiry_delta)),
(11, previously_failed_blinded_path_idxs, optional_vec),