* execution of tasks will stop until a call to this method is made.
   */
  @Override
  public void execute(Runnable task) {
    checkNotNull(task);
    Runnable submittedTask;
    long oldRunCount;
    synchronized (queue) {
      // If the worker is already running (or execute() on the delegate returned successfully, and

class NetServerFileEntryAdapterIterator extends FileEntryAdapterIterator {

    /**
     * @param parent
     * @param delegate
     * @param filter
     */
    public NetServerFileEntryAdapterIterator(final SmbResource parent, final NetServerEnumIterator delegate, final ResourceFilter filter) {
        super(parent, delegate, filter);
    }

    /**
     * @param fe
     * @return
     * @throws MalformedURLException
     */

    void testIsEstablishedShortCircuit() {
        SpnegoContext ctx = newContext();
        // The mock setup is unnecessary since we never call it
        assertFalse(ctx.isEstablished());
        verify(this.mechContext, never()).isEstablished();
    }

    @Test
    @DisplayName("getNetbiosName returns null and does not call delegate")
    void testGetNetbiosName() {

  private static class TestMap extends ForwardingConcurrentMap<String, Integer> {
    final ConcurrentMap<String, Integer> delegate = new ConcurrentHashMap<>();

    @Override
    protected ConcurrentMap<String, Integer> delegate() {
      return delegate;
    }
  }

  public void testPutIfAbsent() {
    TestMap map = new TestMap();
    map.put("foo", 1);

      extends ForwardingList<E> {
    final List<E> delegate;
    final int delta;

    MisleadingSizeList(List<E> delegate, int delta) {
      this.delegate = delegate;
      this.delta = delta;
    }

    @Override
    protected List<E> delegate() {
      return delegate;
    }

    @Override
    public int size() {
      return delegate.size() + delta;
    }
  }

          }

          @Override
          public final Service stopAsync() {
            return delegate.stopAsync();
          }

          @Override
          public final void awaitRunning() {
            delegate.awaitRunning();
          }

          @Override
          public final void awaitRunning(long timeout, TimeUnit unit) throws TimeoutException {

          // requireNonNull(delegate) is safe for reasons similar to requireNonNull(sequencer).
          submittingTaskQueue.nextExecutor = requireNonNull(delegate);
          delegate = null;
        } else {
          // requireNonNull(delegate) is safe for reasons similar to requireNonNull(sequencer).
          Executor localDelegate = requireNonNull(delegate);
          delegate = null;
          this.task = task;

    Executor delegate =
        new Executor() {
          @Override
          public void execute(Runnable task) {
            if (future.set(null)) {
              awaitUninterruptibly(latch);
            }
            throw new RejectedExecutionException();
          }
        };
    SequentialExecutor executor = new SequentialExecutor(delegate);

    /**
     * Constructs a CIFS context wrapper with custom credentials.
     *
     * @param delegate the context to wrap
     * @param creds
     *            Credentials to use
     */
    public CIFSContextCredentialWrapper(final AbstractCIFSContext delegate, final Credentials creds) {
        super(delegate);
        this.creds = creds;
    }

    /**
     *
     * {@inheritDoc}
     *

  }

  /** Like using() but overrideable by NavigableSetTestSuiteBuilder. */
  SortedSetTestSuiteBuilder<E> newBuilderUsing(
      TestSortedSetGenerator<E> delegate, Bound to, Bound from) {
    return using(new SortedSetSubsetTestSetGenerator<E>(delegate, to, from));
  }