using System;

public class Program

{

    public static void Main()

    {

        Bar.DoStuff();

        // Bar.DoOtherStuff(); // Cannot be done due to protection level

        Bar.DoStuffAndOtherStuff(); // note that this public static method calls a private static method from the inner class

    }

    private static class Bar

    {

        public static void DoStuff()

        {

            Console.WriteLine("Test");

        }

        public static void DoStuffAndOtherStuff()

        {

            DoStuff();

            DoOtherStuff();

        }

        private static void DoOtherStuff()

        {

            Console.WriteLine("other stuff");

        }

    }

}