protected override Task Send(Message[] messages)
{
foreach (var g in messages.GroupBy(m => m.Source))
{
int topic = Math.Abs(g.Key.GetHashCode()) % _topicsIndexes.Length;
OnReceived(topic.ToString(), (ulong)Interlocked.Increment(ref _topicsIndexes[topic]), g.ToArray()).Wait();
}
return TaskAsyncHelper.Empty;
}
