Mock heartbeat via While true Thread.Sleep and System.Timers.Timer

Mock heartbeat via While true Thread.Sleep and System.Timers.Timer

static void MockHeartBeatViaWhileTrue()  {   while (true)   {    Console.WriteLine($"Now is {DateTime.Now.ToString("yyyyMMddHHmmssffff")}");    Thread.Sleep(2000);   }  }

 static void HeartBeatViaSystemTimersTimerDemo()  {   System.Timers.Timer heartBeatTimer = new System.Timers.Timer(2000);   heartBeatTimer.Elapsed += HeartBeatTimerElapsed;   heartBeatTimer.Start();  }  private static void HeartBeatTimerElapsed(object sender, ElapsedEventArgs e)  {   Console.WriteLine($"Now is {DateTime.Now.ToString("yyyyMMddHHmmssffff")}");  }