private static IEnumerable<T> ShuffleIterator<T>(this IEnumerable<T> source)
        {
            T[] elements = source.ToArray();
            var rng = RandomProvider.GetThreadRandom();

            for (int i = elements.Length; i > 0; i--)
            {
                int swapIndex = rng.Next(i + 1);
                yield return elements[swapIndex];
                elements[swapIndex] = elements[i];
            }
        }