Err(PaymentSendFailure::PartialFailure { failed_paths_retry, results, .. }) => {
// If a `PartialFailure` error contains a result that is an `Ok()`, it means that
// part of our payment is retried. When we receive `MonitorUpdateInProgress`, it
Err(PaymentSendFailure::PartialFailure { failed_paths_retry, results, .. }) => {
// If a `PartialFailure` error contains a result that is an `Ok()`, it means that
// part of our payment is retried. When we receive `MonitorUpdateInProgress`, it