using System;

public class Program

{

    public static void Main()

    {

        System.Collections.Generic.List<string>? testList = ["test", "tt"];

        //System.Collections.Generic.List<string>? testList = [];

        testList = null;

        //Array<string> stringList = new Array<string>["1", "2"];

        Console.WriteLine(testList.Find(s => s == "1"));

    }

}