@Transactional(propagation = Propagation.REQUIRED, isolation = Isolation.READ_COMMITTED)
 public void initializeNzbStorage(String newNzbPath) {
   Site defaultSite = siteDAO.getDefaultSite();
   defaultSite.setNzbPath(newNzbPath);
   siteDAO.update(defaultSite);
   DefaultFileSystemServiceImpl fileSystemServiceImpl =
       (DefaultFileSystemServiceImpl) fileSystemService;
   config.init();
   fileSystemServiceImpl.init();
 }
 @Transactional
 public void updateSite(Site site) {
   siteDAO.update(site);
 }