what is this?

Autodesk.Max.Plugins.GUP.Start.get

this  is my code

====================================

using System;
using System.Collections.Generic;
using System.Text;
using Autodesk.Max;
using Autodesk.Max.Plugins;
using System.Windows.Forms;


namespace TestGup
{
    public class GupMain : GUP
    {

        public override  void Start()
        {
        }
        public override  void Stop()
        {
        }
        public void Control()
        {
        }
        public void Save()
        {
        }
        public void Load()
        {
        }
        public void DeleteThis()
        {
        }
    }
}