FB.ui（）方法在成功发布后不会自动关闭

Question

        RiakCluster cluster = setUpCluster();
        RiakClient client = new RiakClient(cluster);
        System.out.println("Client object successfully created");
        Namespace quotesBucket = new Namespace("quotes2");
        long start = System.currentTimeMillis();
        for(int i=0; i< 100000; i++){
            RiakObject quoteObject = new RiakObject().setContentType("text/plain").setValue(BinaryValue.create("You're dangerous, Maverick"));
            Location quoteObjectLocation = new Location(quotesBucket, ("Ice"+i));
            StoreValue storeOp = new StoreValue.Builder(quoteObject).withLocation(quoteObjectLocation).build();
            StoreValue.Response storeOpResp = client.execute(storeOp);
        }

FB.ui（）方法在成功发布后不会自动关闭。如何解决？