new ImmutableSortedMap<>(ImmutableSortedSet.emptySet(Ordering.natural()), ImmutableList.of());

  static <K, V> ImmutableSortedMap<K, V> emptyMap(Comparator<? super K> comparator) {
    if (Ordering.natural().equals(comparator)) {
      return of();
    } else {
      return new ImmutableSortedMap<>(ImmutableSortedSet.emptySet(comparator), ImmutableList.of());
    }
  }

  /**

	if p.rawReader != nil {
		return p.rawReader.ServerSideChecksumResult
	}
	return nil
}

func sealETag(encKey crypto.ObjectKey, md5CurrSum []byte) []byte {
	var emptyKey [32]byte
	if bytes.Equal(encKey[:], emptyKey[:]) {
		return md5CurrSum
	}
	return encKey.SealETag(md5CurrSum)
}

func sealETagFn(key crypto.ObjectKey) SealMD5CurrFn {
	fn := func(md5sumcurr []byte) []byte {

          result = TreeSet(String.CASE_INSENSITIVE_ORDER)
        }
        for (varyField in value.split(',')) {
          result.add(varyField.trim())
        }
      }
      return result ?: emptySet()
    }

    /**
     * Returns the subset of the headers in this's request that impact the content of this's body.
     */
    fun Response.varyHeaders(): Headers {

   */
  public static <E> Collector<E, ?, ImmutableSet<E>> toImmutableSet() {
    return CollectCollectors.toImmutableSet();
  }

  /**
   * Returns the empty immutable set. Preferred over {@link Collections#emptySet} for code
   * consistency, and because the return type conveys the immutability guarantee.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */

    <T extends CommonServerMessageBlockResponse> T send(final CommonServerMessageBlockRequest request, final T response)
            throws SmbException {
        return send(request, response, Collections.<RequestParam> emptySet());
    }

    <T extends CommonServerMessageBlockResponse> T send(final CommonServerMessageBlockRequest request, T response,
            final Set<RequestParam> params) throws SmbException {

            realms = new HashSet<>();
            for (ClassRealm realm : classWorld.getRealms()) {
                realms.add(realm.getId());
            }
        } else {
            realms = Collections.emptySet();
        }

        try {
            if (stdout != null) {
                System.setOut(stdout);
            }
            if (stderr != null) {
                System.setErr(stderr);

     * @param artifacts The set of artifacts, may be {@code null}.
     */
    public void setResolvedArtifacts(Set<Artifact> artifacts) {
        this.resolvedArtifacts = (artifacts != null) ? artifacts : Collections.emptySet();
        this.artifacts = null;
        this.artifactMap = null;
    }

    /**
     * Sets the scope filter to select the artifacts being exposed to the currently executed mojo.

   * | `http://host/?a=apple&b`          | `["a", "b"]`            |
   */
  @get:JvmName("queryParameterNames")
  val queryParameterNames: Set<String>
    get() {
      if (queryNamesAndValues == null) return emptySet()
      val result = LinkedHashSet<String>(queryNamesAndValues.size / 2, 1.0F)
      for (i in 0 until queryNamesAndValues.size step 2) {
        result.add(queryNamesAndValues[i]!!)
      }

  }

  /**
   * Creates an empty {@code CopyOnWriteArraySet} instance.
   *
   * <p><b>Note:</b> if you need an immutable empty {@link Set}, use {@link Collections#emptySet}
   * instead.
   *
   * @return a new, empty {@code CopyOnWriteArraySet}
   * @since 12.0
   */
  @J2ktIncompatible
  @GwtIncompatible // CopyOnWriteArraySet