/// <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()
        {
            base.Initialize();

            SortAllCommand.Initialize(this);

            m_dte = GetService(typeof(EnvDTE.DTE)) as EnvDTE.DTE;

            var runningDocumentTable = (IVsRunningDocumentTable)GetGlobalService(typeof(SVsRunningDocumentTable));

            uint pdwCookie;

            runningDocumentTable.AdviseRunningDocTableEvents(new SortFilterOnAfterSave(runningDocumentTable), out pdwCookie);
        }
 /// <summary>
 /// Initializes the singleton instance of the command.
 /// </summary>
 /// <param name="package">Owner package, not null.</param>
 public static void Initialize(Package package)
 {
     Instance = new SortAllCommand(package);
 }