using System;

public class Program

{

    public static void MyFunc(string myThings = null)

    {

        myThings ??= "";

        if (myThings == null)

        {

            Console.WriteLine("MyThings Is Null!"); 

        }

        else

        {

            Console.WriteLine("MyThings Is Not Null!"); 

        }

    }

    public static void MyFuncDefaulted(string myThings = "")

    {       

        if (myThings == null)

        {

            Console.WriteLine("MyThings Is Null!"); 

        }

        else

        {

            Console.WriteLine("MyThings Is Not Null!"); 

        }

    }

    public static void Main()

    {

        MyFunc(null);

        MyFuncDefaulted(null);

    }

}