public override byte[] ToBinary(object obj)
{
if (obj is Internal.Status) return Compress(StatusToProto(obj as Internal.Status));
else if (obj is Internal.Delta) return Compress(DeltaToProto(obj as Internal.Delta));
else if (obj is Send) return SendToProto(obj as Send).ToByteArray();
else if (obj is SendToAll) return SendToAllToProto(obj as SendToAll).ToByteArray();
else if (obj is Publish) return PublishToProto(obj as Publish).ToByteArray();
else throw new ArgumentException(string.Format("Can't serialize object of type {0} with {1}", obj.GetType(), GetType()));
}
