this.eventStore.appendWith(eventId, events);
EventStream eventStream = this.eventStore.fullEventStreamFor(eventId);
assertEquals(2, eventStream.version());
assertEquals(2, eventStream.events().size());
for (int idx = 1; idx <= 2; ++idx) {
DomainEvent domainEvent = eventStream.events().get(idx - 1);
assertEquals(idx, ((TestableDomainEvent) domainEvent).id());