public void Exec(string commandName, vsCommandExecOption executeOption, ref object varIn, ref object varOut,
                  ref bool handled)
 {
     handled = false;
     if (executeOption == vsCommandExecOption.vsCommandExecOptionDoDefault)
     {
         if (commandName == Command.COMMAND_PREFIX + Command.MENU_BAR_EXPORT_COMMAND_NAME)
         {
             ExportGenerator generator = _ioc.CreateExportGenerator();
             generator.Generate();
         }
     }
 }