private static Decodable createFilesystemInformation ( byte infoClass ) throws SMBProtocolDecodingException {
        switch ( infoClass ) {
        case FileSystemInformation.FS_FULL_SIZE_INFO:
            return new FileFsFullSizeInformation();
        case FileSystemInformation.FS_SIZE_INFO:
            return new FileFsSizeInformation();
        default:
            throw new SMBProtocolDecodingException("Unknown filesystem info class " + infoClass);