public static void stopCacheServers() {
   Iterator iter = getCache().getBridgeServers().iterator();
   if (iter.hasNext()) {
     BridgeServer server = (BridgeServer) iter.next();
     server.stop();
     assertFalse(server.isRunning());
   }
 }
 public static void restartCacheServers() {
   Iterator iter = getCache().getBridgeServers().iterator();
   if (iter.hasNext()) {
     BridgeServer server = (BridgeServer) iter.next();
     try {
       server.start();
     } catch (Exception e) {
       fail("Unexpected exception", e);
     }
     assertTrue(server.isRunning());
   }
 }