using System;

public class Program

{

    public static void Main()

    {

        string test = "";

        string test2 = null;

        string test3 = "test3";

        Console.WriteLine(test is { });

        Console.WriteLine(test2 is { Length: 5 });

        Console.WriteLine(test3 is { Length: 5 });

        Console.WriteLine(test3 is { Length: 6 });

    }

}