assertTrue(range.containsAll(ImmutableSortedSet.<Integer>of()));
    assertFalse(range.containsAll(ImmutableSortedSet.of(3, 3, 4, 5, 6)));

    assertTrue(Range.openClosed(3, 3).containsAll(Collections.<Integer>emptySet()));
  }

  public void testEncloses_open() {
    Range<Integer> range = Range.open(2, 5);
    assertTrue(range.encloses(range));
    assertTrue(range.encloses(Range.open(2, 4)));

     */
    protected void load() {
        final String value = System.getProperty("rank.fusion.searchers");
        if (StringUtil.isBlank(value)) {
            availableSearcherNameSet = Collections.emptySet();
        } else {
            availableSearcherNameSet = StreamUtil.split(value, ",")
                    .get(stream -> stream.map(String::trim).filter(StringUtil::isNotBlank).collect(Collectors.toUnmodifiableSet()));

     * Builds a new min-max priority queue using the previously specified options, and having no
     * initial contents.
     */
    public <T extends B> MinMaxPriorityQueue<T> create() {
      return create(Collections.emptySet());
    }

    /**
     * Builds a new min-max priority queue using the previously specified options, and having the
     * given initial elements.
     */

      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());
    }
  }

  /**

          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(CommonServerMessageBlockRequest request, T response) throws CIFSException {
        return send(request, response, Collections.<RequestParam> emptySet());
    }

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

    <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.