return new GcsStorageClient(fessConfig.getStorageProjectId(), bucket, endpoint, fessConfig.getStorageCredentialsPath());
        case S3:
        case S3_COMPAT:
        default:
            return new S3StorageClient(endpoint, accessKey, secretKey, bucket, fessConfig.getStorageRegion());
        }
    }

    /**
     * Creates a StorageClient using the default FessConfig.
     *
     * @return configured StorageClient