* @since 10.0
 */
@GwtCompatible
public enum BoundType {
  /** The endpoint value <i>is not</i> considered part of the set ("exclusive"). */
  OPEN(false),
  CLOSED(true);

  final boolean inclusive;

  BoundType(boolean inclusive) {
    this.inclusive = inclusive;
  }

  /** Returns the bound type corresponding to a boolean value for inclusivity. */
  static BoundType forBoolean(boolean inclusive) {

 * @since 10.0
 */
@GwtCompatible
public enum BoundType {
  /** The endpoint value <i>is not</i> considered part of the set ("exclusive"). */
  OPEN(false),
  CLOSED(true);

  final boolean inclusive;

  BoundType(boolean inclusive) {
    this.inclusive = inclusive;
  }

  /** Returns the bound type corresponding to a boolean value for inclusivity. */
  static BoundType forBoolean(boolean inclusive) {

      unmodifiableList(Arrays.<@Nullable Integer>asList(null, 1, 2, 3, 4, 5));

  public void testCreateEmptyRangeFails() {
    for (BoundType lboundType : BoundType.values()) {
      for (BoundType uboundType : BoundType.values()) {
        assertThrows(
            IllegalArgumentException.class,
            () -> GeneralRange.range(ORDERING, 4, lboundType, 2, uboundType));
      }
    }
  }

  /**
   * A sensible definition of {@link #subMultiset(Object, BoundType, Object, BoundType)} in terms of
   * {@link #headMultiset(Object, BoundType) headMultiset} and {@link #tailMultiset(Object,
   * BoundType) tailMultiset}.
   *
   * <p>If you override either of these methods, you may wish to override {@link
   * #subMultiset(Object, BoundType, Object, BoundType)} to forward to this implementation.
   */

      entryIterator.remove();
      return result;
    }
    return null;
  }

  @Override
  public SortedMultiset<E> subMultiset(
      E fromElement, BoundType fromBoundType, E toElement, BoundType toBoundType) {
    // These are checked elsewhere, but NullPointerTester wants them checked eagerly.
    checkNotNull(fromBoundType);
    checkNotNull(toBoundType);

      unmodifiableList(Arrays.<@Nullable Integer>asList(null, 1, 2, 3, 4, 5));

  public void testCreateEmptyRangeFails() {
    for (BoundType lboundType : BoundType.values()) {
      for (BoundType uboundType : BoundType.values()) {
        assertThrows(
            IllegalArgumentException.class,
            () -> GeneralRange.range(ORDERING, 4, lboundType, 2, uboundType));
      }
    }
  }

  }

  @Override
  public SortedMultiset<E> headMultiset(E upperBound, BoundType boundType) {
    return Multisets.unmodifiableSortedMultiset(delegate().headMultiset(upperBound, boundType));
  }

  @Override
  public SortedMultiset<E> subMultiset(
      E lowerBound, BoundType lowerBoundType, E upperBound, BoundType upperBoundType) {
    return Multisets.unmodifiableSortedMultiset(

  public SortedMultiset<E> headMultiset(@ParametricNullness E upperBound, BoundType boundType) {
    return Multisets.unmodifiableSortedMultiset(delegate().headMultiset(upperBound, boundType));
  }

  @Override
  public SortedMultiset<E> subMultiset(
      @ParametricNullness E lowerBound,
      BoundType lowerBoundType,
      @ParametricNullness E upperBound,
      BoundType upperBoundType) {
    return Multisets.unmodifiableSortedMultiset(

  }

  /**
   * A sensible definition of {@link #subMultiset(Object, BoundType, Object, BoundType)} in terms of
   * {@link #headMultiset(Object, BoundType) headMultiset} and {@link #tailMultiset(Object,
   * BoundType) tailMultiset}.
   *
   * <p>If you override either of these methods, you may wish to override {@link
   * #subMultiset(Object, BoundType, Object, BoundType)} to forward to this implementation.
   */

  }

  @Override
  public ImmutableSortedMultiset<E> headMultiset(E upperBound, BoundType boundType) {
    return forward.tailMultiset(upperBound, boundType).descendingMultiset();
  }

  @Override
  public ImmutableSortedMultiset<E> tailMultiset(E lowerBound, BoundType boundType) {
    return forward.headMultiset(lowerBound, boundType).descendingMultiset();
  }

  @Override
  boolean isPartialView() {