// Send the MPP payment, delivering the updated commitment state to nodes[1].
nodes[0].node.send_payment(payment_hash, RecipientOnionFields {
- payment_secret: Some(payment_secret), payment_metadata: Some(payment_metadata),
+ payment_secret: Some(payment_secret), payment_metadata: Some(payment_metadata), custom_tlvs: vec![],
}, payment_id, route_params.clone(), Retry::Attempts(1)).unwrap();
check_added_monitors!(nodes[0], 2);