private static void RegisterEventListeners(IEventStream stream)
{
var observationMutator = new ObservationMutator();
var observationStore = new AggregateStore <Observation>(Observations);
var arrived = new AnimalArrivedEventProcessor(observationMutator, observationStore);
stream.RegisterListener(arrived);
var animalMutator = new AnimalMutator();
var animalStore = new AggregateStore <Animal>(Animals);
var created = new AnimalCreatedEventProcessor(animalMutator, animalStore);
stream.RegisterListener(created);
var mobMutator = new MobMutator();
var mobStore = new AggregateStore <Mob>(Mobs);
var mobCreated = new MobCreatedEventProcessor(mobMutator, mobStore);
stream.RegisterListener(mobCreated);
var animalHistory = new AnimalIntoMobExtrapolator(stream, MobHistories);
var intoMob = new AnimalIntoMobEventProcessor(animalHistory);
stream.RegisterListener(intoMob);
var animalUpdated = new AnimalUpdatedEventProcessor(animalMutator, animalStore);
stream.RegisterListener(animalUpdated);
}