Snapshot of current AtLeastOnceDelivery
state.
Snapshot of current AtLeastOnceDelivery
state. Can be retrieved with
AtLeastOnceDelivery#getDeliverySnapshot and saved with PersistentActor#saveSnapshot.
During recovery the snapshot received in SnapshotOffer should be set
with AtLeastOnceDelivery.setDeliverySnapshot.
Information about a message that has not been confirmed.
Information about a message that has not been confirmed. Included in UnconfirmedWarning and AtLeastOnceDeliverySnapshot.