@Override
  protected abstract ExecutorService delegate();

  @CheckReturnValue
  @Override
  public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
    return delegate().awaitTermination(timeout, unit);
  }

  @Override
  public <T extends @Nullable Object> List<Future<T>> invokeAll(
      Collection<? extends Callable<T>> tasks) throws InterruptedException {

      throws InterruptedException {
    return drain(q, buffer, numElements, toNanosSaturated(timeout), NANOSECONDS);
  }

  /**
   * Drains the queue as {@link BlockingQueue#drainTo(Collection, int)}, but if the requested {@code
   * numElements} elements are not available, it will wait for them up to the specified timeout.
   *
   * @param q the blocking queue to be drained

  @Override
  protected abstract ExecutorService delegate();

  @CheckReturnValue
  @Override
  public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
    return delegate().awaitTermination(timeout, unit);
  }

  @Override
  public <T extends @Nullable Object> List<Future<T>> invokeAll(
      Collection<? extends Callable<T>> tasks) throws InterruptedException {

	if !drwm1.GetRLock(ctx1, cancel1, id, source, Options{Timeout: time.Second}) {
		panic("Failed to acquire read lock")
	}
	// fmt.Println("1st read lock acquired, waiting...")

	drwm2 := NewDRWMutex(ds, "simplelock")
	ctx2, cancel2 := context.WithCancel(t.Context())
	if !drwm2.GetRLock(ctx2, cancel2, id, source, Options{Timeout: time.Second}) {
		panic("Failed to acquire read lock")
	}

    this.session = session;
    this.notifyAll();
  }

  /** Waits for an OAuth session for this client to be set. */
  public synchronized void awaitAccessToken(Timeout timeout) throws InterruptedIOException {
    while (session == null) {
      timeout.waitUntilNotified(this);
    }
  }

  /** Starts a real time messaging session. */
  public void startRtm() throws IOException {
    String accessToken;

  @Override
  public boolean isTerminated() {
    return delegate.isTerminated();
  }

  @Override
  public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
    Preconditions.checkNotNull(unit, "unit must not be null!");
    return delegate.awaitTermination(timeout, unit);
  }

  @Override
  public <T> ListenableFuture<T> submit(Callable<T> task) {

  @Override
  public boolean isTerminated() {
    return delegate.isTerminated();
  }

  @Override
  public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
    Preconditions.checkNotNull(unit, "unit must not be null!");
    return delegate.awaitTermination(timeout, unit);
  }

  @Override
  public <T> ListenableFuture<T> submit(Callable<T> task) {

   */
  default void awaitRunning(Duration timeout) throws TimeoutException {
    awaitRunning(toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
  }

  /**
   * 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

    boolean isUseLeases();

    /**
     * @return timeout for persistent handles in milliseconds
     */
    long getPersistentHandleTimeout();

    /**
     * Gets the witness heartbeat timeout in milliseconds.
     *
     * @return the heartbeat timeout
     */
    long getWitnessHeartbeatTimeout();

    /**
     * Gets the witness registration timeout in milliseconds.
     *

    /**
     * Default timeout for durable handles (2 minutes)
     */
    public static final long DEFAULT_DURABLE_TIMEOUT = 120000;

    /**
     * Maximum timeout for durable handles (5 minutes)
     */
    public static final long MAX_DURABLE_TIMEOUT = 300000;

    /**
     * Persistent handles have infinite timeout
     */
    public static final long PERSISTENT_TIMEOUT = 0;