@ThreadSafe
@ServiceScope(Scope.Global.class)
public class SftpClientFactory implements Stoppable {
    private static final Logger LOGGER = LoggerFactory.getLogger(SftpClientFactory.class);

    private SftpClientCreator sftpClientCreator = new SftpClientCreator();
    private final Object lock = new Object();
    private final List<LockableSftpClient> allClients = new ArrayList<>();