using System;

public class Program

{

    public static void Main()

    {

        string testString = "testing from main";

        //var findCustomer = new FindCustomer();

        FindCustomer(testString);

    }

    public static void FindCustomer(int test)

    {

        string blala= "just testing";

        Console.WriteLine("testing int? ",blala );

    }

    public static void FindCustomer(string test)

    {

        string blala= "just testing";

        Console.WriteLine("testing int? ",blala );

    }

    public static void FindCustomer(int? test)

    {

        string blala= "just testing";

        Console.WriteLine("testing int? ",blala );

    }

}