Map<String, Integer> unfiltered = createUnfiltered();
    unfiltered.put("cat", 3);
    unfiltered.put("dog", 2);
    unfiltered.put("horse", 5);
    Predicate<Entry<?, ?>> predicate = e -> e.getKey().equals("cat") || e.getValue().equals(2);
    Map<String, Integer> filtered = Maps.filterEntries(unfiltered, predicate);
    assertEquals(ImmutableMap.of("cat", 3, "dog", 2), filtered);
  }

   *   <li>all the values with indexes in the range [0, {@code from}) should be less than or equal
   *       to all the values with indexes in the range [{@code from}, {@code to}];
   *   <li>all the values with indexes in the range ({@code to}, {@code array.length - 1}] should be
   *       greater than or equal to all the values with indexes in the range [{@code from}, {@code
   *       to}].
   * </ul>
   *

   * example, {@code [] < [1L] < [1L, 2L] < [2L]}.
   *
   * <p>The returned comparator is inconsistent with {@link Object#equals(Object)} (since arrays
   * support only identity equality), but it is consistent with {@link Arrays#equals(long[],
   * long[])}.
   *
   * @since 2.0
   */
  public static Comparator<long[]> lexicographicalComparator() {

   * example, {@code [] < [1L] < [1L, 2L] < [2L]}.
   *
   * <p>The returned comparator is inconsistent with {@link Object#equals(Object)} (since arrays
   * support only identity equality), but it is consistent with {@link Arrays#equals(long[],
   * long[])}.
   *
   * @since 2.0
   */
  public static Comparator<long[]> lexicographicalComparator() {

   * lesser. For example, {@code [] < [false] < [false, true] < [true]}.
   *
   * <p>The returned comparator is inconsistent with {@link Object#equals(Object)} (since arrays
   * support only identity equality), but it is consistent with {@link Arrays#equals(boolean[],
   * boolean[])}.
   *
   * @since 2.0
   */
  public static Comparator<boolean[]> lexicographicalComparator() {

   * lesser. For example, {@code [] < [false] < [false, true] < [true]}.
   *
   * <p>The returned comparator is inconsistent with {@link Object#equals(Object)} (since arrays
   * support only identity equality), but it is consistent with {@link Arrays#equals(boolean[],
   * boolean[])}.
   *
   * @since 2.0
   */
  public static Comparator<boolean[]> lexicographicalComparator() {

      }

      when {
        "no-cache".equals(directive, ignoreCase = true) -> {
          noCache = true
        }
        "no-store".equals(directive, ignoreCase = true) -> {
          noStore = true
        }
        "max-age".equals(directive, ignoreCase = true) -> {
          maxAgeSeconds = parameter.toNonNegativeInt(-1)
        }
        "s-maxage".equals(directive, ignoreCase = true) -> {

     *
     * <pre>
     * ObjectUtil.equals(null, null)                  = true
     * ObjectUtil.equals(null, "")                    = false
     * ObjectUtil.equals("", null)                    = false
     * ObjectUtil.equals("", "")                      = true
     * ObjectUtil.equals(Boolean.TRUE, null)          = false
     * ObjectUtil.equals(Boolean.TRUE, "true")        = false
     * ObjectUtil.equals(Boolean.TRUE, Boolean.TRUE)  = true

    public void clear() {
      throw new UnsupportedOperationException();
    }

    @Override
    public int count(@Nullable Object element) {
      for (Entry<E> entry : entrySet()) {
        if (Objects.equal(entry.getElement(), element)) {
          return entry.getCount();
        }
      }
      return 0;
    }

    @Override
    public int add(E element, int occurrences) {

      this.mutex = mutex;
    }

    @Override
    protected Entry<K, V> delegate() {
      return delegate;
    }

    @Override
    public boolean equals(@Nullable Object object) {
      assertTrue(Thread.holdsLock(mutex));
      return super.equals(object);
    }

    @Override
    public K getKey() {
      assertTrue(Thread.holdsLock(mutex));
      return super.getKey();
    }

    @Override