throw new IOException("GCS_PROJECT_ID is blank.");
            }

            try {
                final StorageOptions.Builder builder = StorageOptions.newBuilder().setProjectId(projectId);

                if (StringUtil.isNotBlank(endpoint)) {
                    // For fake-gcs-server or custom endpoint
                    builder.setHost(endpoint);

        this.bucket = bucket;

        final StorageOptions.Builder builder = StorageOptions.newBuilder();

        if (StringUtil.isNotBlank(projectId)) {
            builder.setProjectId(projectId);
        }

        if (StringUtil.isNotBlank(endpoint)) {
            // For fake-gcs-server or custom endpoint
            builder.setHost(endpoint);

            ThreadUtil.sleep(1000L);
        }
    }

    private void setupGcsClient(String bucketName, String endpoint) throws Exception {
        Storage storage = StorageOptions.newBuilder()//
                .setProjectId(PROJECT_ID)//
                .setHost(endpoint)//
                .setCredentials(NoCredentials.getInstance())//
                .build()//
                .getService();

                    "GCS project ID is blank. Please set the GCS_PROJECT_ID environment variable or projectId parameter.");
        }

        final StorageOptions.Builder builder = StorageOptions.newBuilder().setProjectId(projectId);

        final String endpoint = getInitParameter("endpoint", null, String.class);
        if (StringUtil.isNotBlank(endpoint)) {
            // For fake-gcs-server or custom endpoint