using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    class EnergyItem

    {

        string Display{get;set;}

    }

    class NutritionalInfo

    {

        public IEnumerable<EnergyItem> EnergyItems {get;set;}

    }

    public static void Main()

    {

        var nutrionInfo = new NutritionalInfo

        {

            EnergyItems = new List<EnergyItem>()

        };

        var firstOrDefault = nutrionInfo.EnergyItems.FirstOrDefault();

        if(firstOrDefault != null)

        {

            Console.WriteLine("The value is not null");

        }

        else

        {

            Console.WriteLine("The value is null");

        }

    }

}