using System;

​

internal class Program

{

    public static void Main(string[] args)

    {

        MySingleton mySingleton = MySingleton.Instance;

        mySingleton.DoSomething();

​

        MySingleton mySingleton2 = MySingleton.Instance;

        mySingleton2.DoSomething();

    }

}

​

class MySingleton

{

      public void DoSomething()

    {

        Console.WriteLine("Singleton class call has been called.");

        Console.WriteLine("Done.");

    }

}