}

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testAddAll_emptySet() {
    assertFalse(getMultiset().addAll(Collections.<E>emptySet()));
    expectUnchanged();
  }

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testAddAll_emptyMultiset() {
    assertFalse(getMultiset().addAll(getSubjectGenerator().create()));
    expectUnchanged();
  }

  @CollectionFeature.Require(SUPPORTS_ADD)

  static final Iterable<Long> ALL_LONG_CANDIDATES;

  static {
    ImmutableSet.Builder<Long> longValues = ImmutableSet.builder();
    // First add all the integer candidate values.
    longValues.addAll(Iterables.transform(POSITIVE_INTEGER_CANDIDATES, TO_LONG));
    // Add boundary values manually to avoid over/under flow (this covers 2^N for 31 and 63).
    longValues.add(Integer.MAX_VALUE + 1L, Long.MAX_VALUE - 1L, Long.MAX_VALUE);

  static final Iterable<Long> ALL_LONG_CANDIDATES;

  static {
    ImmutableSet.Builder<Long> longValues = ImmutableSet.builder();
    // First add all the integer candidate values.
    longValues.addAll(Iterables.transform(POSITIVE_INTEGER_CANDIDATES, TO_LONG));
    // Add boundary values manually to avoid over/under flow (this covers 2^N for 31 and 63).
    longValues.add(Integer.MAX_VALUE + 1L, Long.MAX_VALUE - 1L, Long.MAX_VALUE);

      assertTrue(Thread.holdsLock(mutex));
      return delegate.containsAll(collection);
    }

    @Override
    public boolean addAll(Collection<? extends E> collection) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.addAll(collection);
    }

    @Override
    public boolean retainAll(Collection<?> collection) {
      assertTrue(Thread.holdsLock(mutex));

    for (Range<C> range : ranges) {
      if (!encloses(range)) {
        return false;
      }
    }
    return true;
  }

  @Override
  public void addAll(RangeSet<C> other) {
    addAll(other.asRanges());
  }

  @Override
  public void addAll(Iterable<Range<C>> ranges) {
    for (Range<C> range : ranges) {
      add(range);
    }
  }

  @Override
  public void removeAll(RangeSet<C> other) {

      assertTrue(Thread.holdsLock(mutex));
      return delegate.containsAll(collection);
    }

    @Override
    public boolean addAll(Collection<? extends E> collection) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.addAll(collection);
    }

    @Override
    public boolean retainAll(Collection<?> collection) {
      assertTrue(Thread.holdsLock(mutex));

      throw new IllegalArgumentException("Key does not satisfy predicate: " + key);
    }

    @Override
    public boolean addAll(Collection<? extends V> collection) {
      addAll(0, collection);
      return true;
    }

    @CanIgnoreReturnValue
    @Override
    public boolean addAll(int index, Collection<? extends V> elements) {
      checkNotNull(elements);
      checkPositionIndex(index, 0);

            Set<MavenProject> selectedProjects = new HashSet<>(requiredSelectors.size() + optionalSelectors.size());
            selectedProjects.addAll(
                    projectSelector.getRequiredProjectsBySelectors(request, allSortedProjects, requiredSelectors));
            selectedProjects.addAll(
                    projectSelector.getOptionalProjectsBySelectors(request, allSortedProjects, optionalSelectors));

        }
        builder.addAll(iterable(list));
      }
    },
    ADD_STREAM {
      @Override
      void doIt(ImmutableDoubleArray.Builder builder, AtomicInteger counter) {
        double[] array = new double[RANDOM.nextInt(10)];
        for (int i = 0; i < array.length; i++) {
          array[i] = counter.getAndIncrement();
        }
        builder.addAll(stream(array));
      }
    },

            return newKinds;
        }
        if (newKinds == null) {
            return kinds;
        }

        final List<Kind> list = new ArrayList<>(kinds.length + newKinds.length);
        list.addAll(Arrays.asList(kinds));
        for (final Kind kind : newKinds) {
            if (!list.contains(kind)) {
                list.add(kind);
            }
        }
        return list.toArray(new Kind[list.size()]);