}

  /**
   * Returns the number of times {@link Cache} lookup methods have returned an uncached (newly
   * loaded) value, or null. Multiple concurrent calls to {@link Cache} lookup methods on an absent
   * value can result in multiple misses, all returning the results of a single cache load
   * operation.
   */
  public long missCount() {
    return missCount;
  }

  /**

  }

  /**
   * Returns the number of times {@link Cache} lookup methods have returned an uncached (newly
   * loaded) value, or null. Multiple concurrent calls to {@link Cache} lookup methods on an absent
   * value can result in multiple misses, all returning the results of a single cache load
   * operation.
   */
  public long missCount() {
    return missCount;
  }

  /**

        return getArtifacts().get(0);
    }

    /**
     * {@return the project main artifact}, which is the artifact produced by this project build, if applicable.
     * This artifact MAY be absent if the project is actually not producing any main artifact (i.e. "pom" packaging).
     *
     * @see #getPackaging()
     * @see org.apache.maven.api.services.ArtifactManager#getPath(Artifact)
     */
    @Nonnull

 *
 * ### Username and Password
 *
 * Username and password are either present, or the empty string `""` if absent. This class offers
 * no mechanism to differentiate empty from absent. Neither of these components are popular in
 * practice. Typically HTTP applications use other mechanisms for user identification and
 * authentication.
 *
 * ### Host
 *

         * aren't stripping UnsafeComparator today? Should we have Proguard configuration for it?)
         *
         * - if Unsafe is removed entirely from JDKs (or already absent in some unusual environment
         * today). TODO: b/392974826 - Check for the existence of Unsafe and its methods
         * reflectively before attempting to access UnsafeComparator. Or, better yet, allow

      if (urlHost.length != domain.length &&
        PublicSuffixDatabase.get().getEffectiveTldPlusOne(domain) == null
      ) {
        return null
      }

      // If the path is absent or didn't start with '/', use the default path. It's a string like
      // '/foo/bar' for a URL like 'http://example.com/foo/bar/baz'. It always starts with '/'.
      if (path == null || !path.startsWith("/")) {

 * closely related, e.g. see <a href="http://en.wikipedia.org/wiki/Little%27s_law">Little's
 * Law</a>).
 *
 * <p>A {@code RateLimiter} is defined primarily by the rate at which permits are issued. Absent
 * additional configuration, permits will be distributed at a fixed rate, defined in terms of
 * permits per second. Permits will be distributed smoothly, with the delay between individual

   * `ConcurrentModificationException`, but if new responses are added while iterating, their URLs
   * will not be returned. If existing responses are evicted during iteration, they will be absent
   * (unless they were already returned).
   *
   * The iterator supports [MutableIterator.remove]. Removing a URL from the iterator evicts the
   * corresponding response from the cache. Use this to evict selected responses.

    MediaType mediaType =
        addKnownType(new MediaType(type, subtype, ImmutableListMultimap.<String, String>of()));
    mediaType.parsedCharset = Optional.absent();
    return mediaType;
  }

  private static MediaType createConstantUtf8(String type, String subtype) {
    MediaType mediaType = addKnownType(new MediaType(type, subtype, UTF_8_CONSTANT_PARAMETERS));

            .add(SHORT_NAME, Optional.of("1"))
            .add(LONG_NAME, Optional.of("1"))
            .add(SHORT_NAME, Optional.absent())
            .add(LONG_NAME, Optional.absent())
            .add(SHORT_NAME, Optional.of("2"))
            .add(SHORT_NAME, Optional.absent())
            .addValue(null)
            .add(SHORT_NAME, new int[] {1})
            .add(LONG_NAME, new int[] {2})