return pendingOperations;
    }

    /**
     * Add a pending operation
     *
     * @param operation operation to add
     */
    public void addPendingOperation(CommonServerMessageBlock operation) {
        pendingOperations.add(operation);
    }

    /**
     * Remove a pending operation
     *
     * @param operation operation to remove

                        // Small delay to increase chance of race conditions
                        Thread.yield();
                    }
                } catch (Exception e) {
                    exceptions.add(e);
                } finally {
                    endLatch.countDown();
                }
            });
        }

        // Start all threads simultaneously
        startLatch.countDown();

      this.listener = checkNotNull(listener);
      this.executor = checkNotNull(executor);
    }

    /** Enqueues an event to be run. */
    synchronized void add(ListenerCallQueue.Event<L> event, Object label) {
      waitQueue.add(event);
      labelQueue.add(label);
    }

    /**
     * Dispatches all listeners {@linkplain #enqueue enqueued} prior to this call, serially and in
     * order.
     */

 *   ...
 * }
 * </pre>
 *
 * <p>No cascading checks are performed against the return values of methods unless the method is a
 * static factory method. Neither are semantics of mutation methods such as {@code
 * someList.add(obj)} checked. For more detailed discussion of supported and unsupported cases, see
 * {@link #testEquals}, {@link #testNulls} and {@link #testSerializable}.
 *

        List<Iterable<T>> words = new ArrayList<>();
        words.add(Collections.<T>emptyList());
        for (T t : scenario.strictlyOrderedList) {
          words.add(asList(t));
          for (T s : scenario.strictlyOrderedList) {
            words.add(asList(t, s));
          }
        }
        return new Scenario<Iterable<T>>(

        List<Iterable<T>> words = new ArrayList<>();
        words.add(Collections.<T>emptyList());
        for (T t : scenario.strictlyOrderedList) {
          words.add(asList(t));
          for (T s : scenario.strictlyOrderedList) {
            words.add(asList(t, s));
          }
        }
        return new Scenario<Iterable<T>>(

        if (!getActiveProfiles().contains(profile)) {
            getActiveProfiles().add(profile);
        }

        return this;
    }

    @Override
    public MavenExecutionRequest addInactiveProfile(String profile) {
        if (!getInactiveProfiles().contains(profile)) {
            getInactiveProfiles().add(profile);
        }

        return this;
    }

    @Override

    }

    /**
     * Processes the CORS request by adding standard CORS headers to the response.
     * Headers include allowed origin, methods, headers, max age, and credentials setting.
     *
     * @param origin the origin of the request
     * @param request the servlet request
     * @param response the servlet response to add CORS headers to
     */
    @Override

        resetContainer();

        List<V> values = multimap().get(key);
        List<V> expectedValues = copyToList(values);

        assertTrue(multimap().put(key, value));
        expectedValues.add(value);

        assertGet(key, expectedValues);
        assertEquals(value, values.get(values.size() - 1));
      }
    }
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)

    /**
     * Adds a Throwable to the list of failures.
     *
     * @param t the Throwable to add
     */
    public void addFailure(final Throwable t) {
        failures.add(t);
    }

    /**
     * Checks if there are any failures recorded.
     *
     * @return true if there is at least one failure, false otherwise
     */