using System;

using System.Collections.Generic;

public class Program

{

    class B

    {

        public List<string> InboundPortsForAuxNics;

    }

    public static void Main()

    {

        string d = "P1D";

        var currentTime = DateTime.UtcNow;

        var obj = new B();

        //Uncomment me it will fail

         //Console.WriteLine("Rahul Vendor InboundPortsForAuxNics" + obj.InboundPortsForAuxNics == null ? "" : string.Join("$", obj.InboundPortsForAuxNics));

        Console.WriteLine("Rahul Vendor InboundPortsForAuxNics" + (obj.InboundPortsForAuxNics == null ? "" : string.Join("$", obj.InboundPortsForAuxNics)));

    }

}