/// <summary>
        /// Initialization of the package; this method is called right after the package is sited, so this is the place
        /// where you can put all the initialization code that rely on services provided by VisualStudio.
        /// </summary>
        protected override void Initialize()
        {
            // Add an item to OutputWindow
            AddOutputWindow("command window");

            Command.Initialize(this);
            SelectionCommand.Initialize(this);
            base.Initialize();
        }
 /// <summary>
 /// Initializes the singleton instance of the command.
 /// </summary>
 /// <param name="package">Owner package, not null.</param>
 public static void Initialize(CommandPackage package)
 {
     Instance = new SelectionCommand(package);
 }