// since the putIfAbsent returned a zero, we'll try to replace...
    when(backingMap.replace(eq(KEY), eq(existingZero), isA(AtomicInteger.class))).thenReturn(false);
    // ...and then putIfAbsent. Simulate failure on both
    when(backingMap.putIfAbsent(eq(KEY), isA(AtomicInteger.class))).thenReturn(existing);

    // next map.get()
    when(backingMap.get(KEY)).thenReturn(existingZero);

        acquireSharedInterruptibly(-1);
        return getValue();
      }

      /**
       * Implementation of the actual value retrieval. Will return the value on success, an
       * exception on failure, a cancellation on cancellation, or an illegal state if the
       * synchronizer is in an invalid state.
       */
      private V getValue() throws CancellationException, ExecutionException {
        int state = getState();

      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

		writeSTSErrorResponse(ctx, w, ErrSTSInvalidParameterValue, err)
		return
	}

	// If authentication failed, return the error message to the user.
	if res.Failure != nil {
		writeSTSErrorResponse(ctx, w, ErrSTSUpstreamError, errors.New(res.Failure.Reason))
		return
	}

	// It is required that parent user be set.
	if res.Success.User == "" {

    }

    @Override
    public void run() {
      if (future instanceof InternalFutureFailureAccess) {
        Throwable failure =
            InternalFutures.tryInternalFastPathGetFailure((InternalFutureFailureAccess) future);
        if (failure != null) {
          callback.onFailure(failure);
          return;
        }
      }
      final V value;
      try {
        value = getDone(future);

   *     future
   * @param executor Executor to run the function in.
   * @return A future that holds result of the function (if the input succeeded) or the original
   *     input's failure (if not)
   */
  public final <T extends @Nullable Object> FluentFuture<T> transformAsync(
      AsyncFunction<? super V, T> function, Executor executor) {

     */
    long getDfsTtl ();


    /**
     * 
     * Property <tt>jcifs.smb.client.dfs.strictView</tt> (boolean, default false)
     * 
     * @return whether a authentication failure during DFS resolving will throw an exception
     */
    boolean isDfsStrictView ();


    /**
     * 
     * Property <tt>jcifs.smb.client.dfs.disabled</tt> (boolean, default false)
     * 

                 * junk. We need to bump up the wordCount here so that this method returns
                 * the correct number of bytes for signing purposes. Otherwise we get a
                 * signing verification failure.
                 */
                if (command == SMB_COM_NT_CREATE_ANDX && ((SmbComNTCreateAndXResponse)this).isExtended)
                    wordCount += 8;
            }

      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.