void ProcessMessage(ClientConnection client, RequestWhoList message)
 {
     client.WhoList(
         _listener.Clients
         .Where(c => c.Avatar != null)
         .Select(c => new Tuple <int, string>(c.Avatar.ObjectInstanceId, c.Avatar.TemplateObjectName))
         .ToArray());
 }
 void ProcessMessage(ClientConnection client, RequestWhoList message)
 {
     client.WhoList(
         Listener.Clients
         .Select(c => c.Avatar)
         .Except(null)
         .Select(a => new Tuple<int, string>(a.Id, a.Name))
         .ToArray());
 }