public void testBackupForIsCorrect() {
   cacheManager.getCache(); // start default cache
   cacheManager.defineConfiguration("nycBackup", nycBackup.build());
   cacheManager.getCache("nycBackup");
   SitesConfiguration sitesConfig = cache("nycBackup").getCacheConfiguration().sites();
   assertEquals(CacheContainer.DEFAULT_CACHE_NAME, sitesConfig.backupFor().remoteCache());
   assertEquals("NYC", sitesConfig.backupFor().remoteSite());
   sitesConfig.backupFor().isBackupFor("NYC", CacheContainer.DEFAULT_CACHE_NAME);
 }