}

    /**
     * Internal method to acquire a distributed lock with retry control.
     *
     * @param operationName the operation name used as the lock document ID.
     * @param data optional data to store with the operation document.
     * @param remainingRetries the number of remaining retry attempts for stale lock cleanup.
     * @return {@code true} if the lock was acquired.
     */

 *
 * @author koichik
 * @param <T1>
 *            The type of the first value
 * @param <T2>
 *            The type of the second value
 */
public class Pair<T1, T2> {

    /** The first value */
    protected T1 first;

    /** The second value */
    protected T2 second;

    /**
     * Creates and returns a pair of two values.
     *
     * @param <T1>

     * Get negotiation status
     *
     * @return status code (0 = success)
     */
    public int getStatus() {
        return status;
    }

    /**
     * Set negotiation status
     *
     * @param status status code
     */
    public void setStatus(int status) {
        this.status = status;
    }

    /**
     * Get selected protocol version
     *
     * @return selected version
     */

     * @param length length of data to send
     * @throws IOException if an I/O error occurs
     */
    void send(byte[] buf, int off, int length) throws IOException;

    /**
     * Performs a transaction on the pipe.
     *
     * @param buf the buffer containing the transaction data
     * @param off the offset in the buffer
     * @param length the length of data to send

        return binding.toString();
    }

    /**
     * Sends a DCERPC fragment to the remote endpoint
     * @param buf the buffer containing the fragment
     * @param off the offset into the buffer
     * @param length the length of data to send
     * @param isDirect whether to use direct transmission
     * @throws IOException if an I/O error occurs
     */

     * @param hostname The parameter value of hostname. (NotNull)
     */
    public void setHostname(String hostname) {
        registerVariable("hostname", hostname);
    }

    /**
     * Set the value of jobname, used in parameter comment. <br>
     * Even if empty string, treated as empty plainly. So "IF pmb != null" is false if empty.
     * @param jobname The parameter value of jobname. (NotNull)

public interface ArtifactDeployer extends Service {

    /**
     * @param request {@link ArtifactDeployerRequest}
     * @throws ArtifactDeployerException if the deployment failed
     */
    void deploy(@Nonnull ArtifactDeployerRequest request);

    /**
     * @param session the repository session
     * @param repository the repository to deploy to
     * @param artifacts the collection of artifacts to deploy

    /**
     * Creates a new {@link FileAccessException} with the specified message code, arguments, and cause.
     *
     * @param messageCode
     *            the message code
     * @param args
     *            the message arguments
     * @param cause
     *            the cause
     */
    public FileAccessException(final String messageCode, final Object[] args, final Throwable cause) {

     *
     * @param offset the offset to set
     */
    public void setOffset(final long offset) {
        this.offset = offset;
    }

    /**
     * Add RDMA channel information for direct memory access
     *
     * @param remoteKey remote memory key
     * @param address remote memory address
     * @param length length of memory region
     */

   */
  void awaitRunning();

  /**
   * Waits for the {@link Service} to reach the {@linkplain State#RUNNING running state} for no more
   * than the given time.
   *
   * @param timeout the maximum time to wait
   * @param unit the time unit of the timeout argument
   * @throws TimeoutException if the service has not reached the given state within the deadline