using System;                                                                                                                                                                                                             

public class MainClass {                                                                                                                                                                       

  public static void Main (string[] args) {                                                                                                                                                                                                              

    AssertWithDelay(2000, () => false);                                                                                                                                                                            

    Console.WriteLine("done");  

  }                                                                                                                                                             

  static void AssertWithDelay(int time, Func<bool> test) {                                                                                                                                                       

    Console.WriteLine("hello, time={}", time);                                                                                                                       

    while (true) {

        if (test())

            break;

    }

  }                                                                                                                                                             

}                                                                                                                                                                                 

​