docs: private CmsClientSitemapEntry delete(CmsSitemapChange change) throws CmsException {
  
          CmsObject cms = getCmsObject();
          CmsResource resource = cms.readResource(change.getEntryId(), CmsResourceFilter.ONLY_VISIBLE_NO_DELETED);
          ensureLock(resource);
          cms.deleteResource(cms.getSitePath(resource), CmsResource.DELETE_PRESERVE_SIBLINGS);
          tryUnlock(resource);
          return null;
      }