/// <summary>
/// Enqueue Message
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
protected override void ReEnqueue(IQueueItem item)
{
base.ReEnqueue(item);
QueueList[item.GetPtr()] = item;
//if (MessageArrived != null)
//{
// OnMessageArrived(new QueueItemEventArgs(item, MessageState.Arrived));
//}
//return new QueueAck(MessageState.Arrived, item);// new Ptr(ptr, PtrState.Arrived);
}