public void Subscribe()
{
var type1 = new MessageType("type1", new Version(0, 0, 0, 0));
var type2 = new MessageType("type2", new Version(0, 0, 0, 0));
persister.Subscribe(new Subscriber("e@machine1", "endpoint"), type1, null).Await();
persister.Subscribe(new Subscriber("e@machine1", "endpoint"), type2, null).Await();
persister.Subscribe(new Subscriber("e@machine2", "endpoint"), type1, null).Await();
persister.Subscribe(new Subscriber("e@machine2", "endpoint"), type2, null).Await();
persister.Subscribe(new Subscriber("e@machine3", null), type2, null).Await();
var result = persister.GetSubscribers(type1, type2).Result.OrderBy(s => s.TransportAddress);
ObjectApprover.VerifyWithJson(result);
}