internal static async Task CopyAsync_Interrupt([Size(5)] IAsyncEnumerable <int> original)
        {
            IAsyncEnumerable <int> items = Tools.Duplicator.Copy(original);

            await items.GetAsyncEnumerator().DisposeAsync().ConfigureAwait(false);

            int count = 0;

            await foreach (int item in items)
            {
                count++;
                if (count == 3)
                {
                    break;
                }
            }

            count = 0;
            await foreach (int item in items)
            {
                count++;
            }
            count.Assert().Is(5);

            items.Assert().Is(original);
        }