if (occurrences == 0) {
      return count(element);
    }
    int index = e.ordinal();
    int oldCount = counts[index];
    if (oldCount == 0) {
      return 0;
    } else if (oldCount <= occurrences) {
      counts[index] = 0;
      distinctElements--;
      size -= oldCount;
    } else {
      counts[index] = oldCount - occurrences;
      size -= occurrences;
    }
    return oldCount;
  }

  }

  private static Bounds every(Type[] bounds) {
    // Every bound must match. On any false, result is false.
    return new Bounds(bounds, false);
  }

  private static Bounds any(Type[] bounds) {
    // Any bound matches. On any true, result is true.
    return new Bounds(bounds, true);
  }

  private static class Bounds {
    private final Type[] bounds;

       * complementLowerBoundWindow. Complement range lower bounds are either positive range upper
       * bounds, or Cut.belowAll().
       *
       * positiveItr starts at the first positive range with lower bound greater than
       * firstComplementRangeLowerBound. (Positive range lower bounds correspond to complement range
       * upper bounds.)
       */
      Collection<Range<C>> positiveRanges;

      implements RemovalListener<K, V> {

    @Override
    public void onRemoval(RemovalNotification<K, V> notification) {
      add(notification);
    }
  }

  /**
   * {@link RemovalListener} that counts each {@link RemovalNotification} it receives, and provides
   * access to the most-recently received one.
   */
  static class CountingRemovalListener<K, V> implements RemovalListener<K, V> {

  abstract X toX(double d, RoundingMode mode);

  /** Returns a - b, guaranteed that both arguments are nonnegative. */
  abstract X minus(X a, X b);

  /** Rounds {@code x} to a {@code double}. */
  final double roundToDouble(X x, RoundingMode mode) {
    checkNotNull(x, "x");
    checkNotNull(mode, "mode");
    double roundArbitrarily = roundToDoubleArbitrarily(x);

    String reportItem(Item<?> item) {
      return item.toString();
    }
  }

  /**
   * A word about using {@link Equivalence}, which automatically checks for {@code null} and
   * identical inputs: This sounds like it ought to be a problem here, since the goals of this class
   * include testing that {@code equals()} is reflexive and is tolerant of {@code null}. However,

   * references to the map or modify it in any way.
   *
   * <p>The returned multiset is serializable if the input map is.
   *
   * @param countMap backing map for storing the elements in the multiset and their counts. It must
   *     be empty.
   * @throws IllegalArgumentException if {@code countMap} is not empty
   * @since 20.0
   */
  public static <E> ConcurrentHashMultiset<E> create(ConcurrentMap<E, AtomicInteger> countMap) {

  public void remove(Range<K> rangeToRemove) {
    if (rangeToRemove.isEmpty()) {
      return;
    }

    /*
     * The comments for this method will use [ ] to indicate the bounds of rangeToRemove and ( ) to
     * indicate the bounds of ranges in the range map.
     */
    Entry<Cut<K>, RangeMapEntry<K, V>> mapEntryBelowToTruncate =
        entriesByLowerBound.lowerEntry(rangeToRemove.lowerBound);

    private final LongAddable totalLoadTime = LongAddables.create();
    private final LongAddable evictionCount = LongAddables.create();

    /** Constructs an instance with all counts initialized to zero. */
    public SimpleStatsCounter() {}

    /** @since 11.0 */
    @Override
    public void recordHits(int count) {
      hitCount.add(count);
    }

    /** @since 11.0 */

    } while (System.nanoTime() - deadline < 0);
    throw formatRuntimeException(
        "Latch failed to count down within %d second timeout", timeoutSeconds);
  }

  /**
   * Creates a garbage object that counts down the latch in its finalizer. Sequestered into a
   * separate method to make it somewhat more likely to be unreachable.
   */
  private static void createUnreachableLatchFinalizer(CountDownLatch latch) {