Storage storage = StorageOptions.getDefaultInstance().getService();
        String bucketName = RemoteStorageHelper.generateBucketName();
        try{
            Cors cors = Cors.newBuilder()
                    .setOrigins(ImmutableList.of(Cors.Origin.of("*")))
                    .setMethods(ImmutableList.of(HttpMethod.GET))
                    .setResponseHeaders(ImmutableList.of("Content-Type"))
                    .setMaxAgeSeconds(100)
                    .build();
            Bucket bucket =
                    storage.create(BucketInfo.newBuilder(bucketName).setCors(ImmutableList.of(cors)).build());
            System.out.println("Prior size : " + bucket.getCors().size());
            Bucket updatedBucket  = bucket.toBuilder().setCors(null).build().update();
            System.out.println("After updating operation size must be zero instead of : " + updatedBucket.getCors().size());

        }finally {
            RemoteStorageHelper.forceDelete(storage, bucketName, 5, TimeUnit.SECONDS);
        }