public PeekQueueOperation <T> Peek() => QueueOperation.Peek <T>();
 public EnumerateEnumerableOperation <T> Enumerate() => QueueOperation.Enumerate <T>();
 public DequeueQueueOperation <T> Dequeue() => QueueOperation.Dequeue <T>();
 public EnqueueQueueOperation <T> Enqueue(T value) => QueueOperation.Enqueue(value);
 public CountReadOnlyCollectionOperation <T> Count() => QueueOperation.Count <T>();