public void Close( 
   ApplicationCloseOption closeOption
)

using Attachmate.Reflection.Emulation.IbmHosts;
using Attachmate.Reflection.Framework;
using Attachmate.Reflection.UserInterface;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ApplicationInstanceID
{
    class Program
    {
        private Guid applicationInstanceId;

        static public Guid ApplicationInstanceId { get; set; }

        static void Main(string[] args)
        {

            ApplicationInstanceId = MyReflection.Start();

            Application app = MyReflection.CreateApplication();

            //Open sessions and perform tasks...


            //Close Reflection
            try
            {
                app.Close(ApplicationCloseOption.CloseNoSave);
            }
            catch
            {
                MyReflection.ForceStop(ApplicationInstanceId);
            }


            Console.ReadLine();
        }
    }
}