static async Task Test(CancellationToken token)
        {
            var pts  = new PauseTokenSource();
            var task = DoWorkAsync(pts.Token, token);

            while (true)
            {
                token.ThrowIfCancellationRequested();

                Console.WriteLine("Press enter to pause...");
                Console.ReadLine();

                Console.WriteLine("Before pause requested");
                await pts.PauseAsync();

                Console.WriteLine("After pause requested, paused: " + await pts.IsPaused());

                Console.WriteLine("Press enter to resume...");
                Console.ReadLine();

                Console.WriteLine("Before resume");
                await pts.ResumeAsync();

                Console.WriteLine("After resume");
            }
        }