docs: public static CmsXmlContainerPage saveDetailOnlyPage(
          CmsObject cms,
          CmsResource content,
          String locale,
          CmsContainerPageBean page)
  
      throws CmsException {
  
          String detailOnlyPath = getDetailOnlyPageNameWithoutLocaleCheck(content.getRootPath(), locale);
          CmsResource resource = readOrCreateDetailOnlyPage(cms, content.getStructureId(), detailOnlyPath);
          CmsXmlContainerPage xmlCntPage = CmsXmlContainerPageFactory.unmarshal(cms, cms.readFile(resource));
          xmlCntPage.save(cms, page);
          return xmlCntPage;
      }