public void ReturnHighestVersion()
{
var streamId = Guid.NewGuid();
var snapshot1 = new Snapshot(streamId, 1, new Object());
var snapshot2 = new Snapshot(streamId, 10, new Object());
var snapshot3 = new Snapshot(streamId, 20, new Object());
SnapshotStore.Save(snapshot1);
SnapshotStore.Save(snapshot2);
SnapshotStore.Save(snapshot3);
Assert.Equal(20, SnapshotStore.GetLastSnapshot(typeof(Object), streamId).Version);
}