code: public List<CmsBrokenLinkBean> renderBrokenLinkGroupContainer(CmsResource target, CmsResource source)
      throws CmsException {
  
          List<CmsBrokenLinkBean> result = new ArrayList<CmsBrokenLinkBean>();
          CmsBrokenLinkBean brokenLinkBean = createSitemapBrokenLinkBean(source);
          result.add(brokenLinkBean);
          try {
              CmsResource referencingPage = findReferencingPage(source);
              if (referencingPage != null) {
                  String pagePath = m_cms.getRequestContext().removeSiteRoot(referencingPage.getRootPath());
                  String title = CmsResource.getName(pagePath);
                  CmsProperty titleProp = m_cms.readPropertyObject(
                      referencingPage,
                      CmsPropertyDefinition.PROPERTY_TITLE,
                      false);
                  if (!titleProp.isNullProperty()) {
                      title = titleProp.getValue();
                  }
                  addPageInfo(brokenLinkBean, title, pagePath);
              }
          } catch (CmsException e) {
              LOG.warn(e.getLocalizedMessage(), e);
          }
          return result;
      }
docs: Renders the broken links for a group container.<p>
  
  @param target the broken link target
  @param source the broken link source
  
  @return the list of broken link beans to display to the user
  
  @throws CmsException if something goes wrong