public void CopyTo(T[] array, int arrayIndex, int countLimit)
{
Extensions.CanCopyTo(array, arrayIndex, countLimit);
Extensions.CopyTo(this, array, arrayIndex, countLimit);
}
public void CopyTo(IGrouping <TKey, T>[] array, int arrayIndex, int countLimit)
{
Extensions.CanCopyTo(array, arrayIndex, countLimit);
Progressor.While(() => _cache.Count < countLimit).Consume();
_cache.Values.CopyTo(array, arrayIndex, countLimit);
}