public async Task CreateWithNoStream()
        {
            var serializer = new JsonEventSerializer(JsonSerializer.CreateDefault());
            var settings   = new VerifiableEventStoreSettings(serializer);
            var eventStore = new VerifiableEventStore(settings);

            var aggregate = Goat.Create("g047");
            await aggregate.CommitAsync(eventStore);

            eventStore.VerifyAppendToStream(aggregate, ExpectedVersion.NoStream, verify => verify
                                            .Event(GoatCreated.EventType, e =>
            {
                Assert.Equal("g047", e.Name);
            })
                                            );
        }
        public async Task SetupAggregate_VerifyAppendToStream()
        {
            var serializer = new JsonEventSerializer(JsonSerializer.CreateDefault());
            var settings   = new VerifiableEventStoreSettings(serializer);
            var eventStore = new VerifiableEventStore(settings);

            var aggregate = Goat.Create("g047");

            aggregate.Rename("goatl");
            await aggregate.CommitAsync(eventStore);

            eventStore.VerifyAppendToStream(aggregate, ExpectedVersion.NoStream, verify => verify
                                            .Event(GoatCreated.EventType, e =>
            {
                Assert.Equal("g047", e.Name);
            })
                                            .Event(GoatRenamed.EventType, e =>
            {
                Assert.Equal("goatl", e.Name);
            })
                                            );

            var streamVersion = eventStore.CurrentVersion(aggregate);

            var retrieved = await Goat.FromAsync(eventStore, aggregate.Id);

            retrieved.Rename("meh");
            await retrieved.CommitAsync(eventStore);

            eventStore.VerifyAppendToStream(aggregate, streamVersion, verify => verify
                                            .Event(GoatRenamed.EventType, e =>
            {
                Assert.Equal("meh", e.Name);
            })
                                            );
        }