public SortedMultiset<E> subMultiset(
      @ParametricNullness E lowerBound,
      BoundType lowerBoundType,
      @ParametricNullness E upperBound,
      BoundType upperBoundType) {
    return delegate().subMultiset(lowerBound, lowerBoundType, upperBound, upperBoundType);
  }

  /**
   * A sensible definition of {@link #subMultiset(Object, BoundType, Object, BoundType)} in terms of

    assertEquals(4, (int) range.lowerEndpoint());
    assertEquals(OPEN, range.lowerBoundType());
    assertTrue(range.hasUpperBound());
    assertEquals(8, (int) range.upperEndpoint());
    assertEquals(OPEN, range.upperBoundType());
    assertFalse(range.isEmpty());
    assertEquals("(4..8)", range.toString());
    reserializeAndAssert(range);
  }

  public void testOpen_invalid() {

    assertEquals(4, (int) range.lowerEndpoint());
    assertEquals(OPEN, range.lowerBoundType());
    assertTrue(range.hasUpperBound());
    assertEquals(8, (int) range.upperEndpoint());
    assertEquals(OPEN, range.upperBoundType());
    assertFalse(range.isEmpty());
    assertEquals("(4..8)", range.toString());
    reserializeAndAssert(range);
  }

  public void testOpen_invalid() {

  public SortedMultiset<E> subMultiset(
      @ParametricNullness E lowerBound,
      BoundType lowerBoundType,
      @ParametricNullness E upperBound,
      BoundType upperBoundType) {
    return delegate().subMultiset(lowerBound, lowerBoundType, upperBound, upperBoundType);
  }

  /**
   * A sensible definition of {@link #subMultiset(Object, BoundType, Object, BoundType)} in terms of

      @ParametricNullness E lowerBound,
      BoundType lowerBoundType,
      @ParametricNullness E upperBound,
      BoundType upperBoundType) {
    return Multisets.unmodifiableSortedMultiset(
        delegate().subMultiset(lowerBound, lowerBoundType, upperBound, upperBoundType));
  }

  @Override
  public SortedMultiset<E> tailMultiset(@ParametricNullness E lowerBound, BoundType boundType) {

    return range(CLOSED, CLOSED);
  }

  @Override
  public Range<C> range(BoundType lowerBoundType, BoundType upperBoundType) {
    return Range.create(
        range.lowerBound.withLowerBoundType(lowerBoundType, domain),
        range.upperBound.withUpperBoundType(upperBoundType, domain));
  }

  @Override
  public boolean equals(@Nullable Object object) {
    if (object == this) {
      return true;

    return this;
  }

  @Override
  public Range<C> range() {
    throw new NoSuchElementException();
  }

  @Override
  public Range<C> range(BoundType lowerBoundType, BoundType upperBoundType) {
    throw new NoSuchElementException();
  }

  @Override
  ContiguousSet<C> headSetImpl(C toElement, boolean inclusive) {
    return this;
  }

  @Override
  ContiguousSet<C> subSetImpl(

          range.upperEndpoint(),
          range.upperBoundType() == BoundType.CLOSED);
    } else if (range.hasLowerBound()) {
      return set.tailSet(range.lowerEndpoint(), range.lowerBoundType() == BoundType.CLOSED);
    } else if (range.hasUpperBound()) {
      return set.headSet(range.upperEndpoint(), range.upperBoundType() == BoundType.CLOSED);
    }
    return checkNotNull(set);
  }

              ? complementLowerBoundWindow.upperEndpoint()
              : Cut.aboveAll();
      boolean inclusive =
          complementLowerBoundWindow.hasUpperBound()
              && complementLowerBoundWindow.upperBoundType() == BoundType.CLOSED;
      PeekingIterator<Range<C>> positiveItr =
          Iterators.peekingIterator(
              positiveRangesByUpperBound
                  .headMap(startingPoint, inclusive)