code: protected Component getUpdateThreadComponent(List<String> elementIds) {
  
          final A_CmsReportThread thread = new CmsIndexingReportThread(A_CmsUI.getCmsObject(), elementIds);
          thread.start();
          return new CmsReportWidget(thread);
      }
docs: Gets the thread to update given indexes.<p>
  
  @param elementIds to be updated
  @return A_CmsReportThread