@Override
                  protected Multiset<String> create(String[] elements) {
                    Multiset<String> result = TreeMultiset.create(NullsBeforeB.INSTANCE);
                    Collections.addAll(result, elements);
                    return result;
                  }

                  @Override
                  public List<String> order(List<String> insertionOrder) {

                  protected Set<String> create(String[] elements) {
                    Set<String> set = newHashSet(elements);
                    Set<String> other = newHashSet("wz", "xq");
                    set.addAll(other);
                    other.add("pq");
                    return Sets.difference(set, other);
                  }
                })
            .named("set - set")
            .withFeatures(

   */
  @CanIgnoreReturnValue
  public static <T extends @Nullable Object> boolean addAll(
      Collection<T> addTo, Iterable<? extends T> elementsToAdd) {
    if (elementsToAdd instanceof Collection) {
      Collection<? extends T> c = (Collection<? extends T>) elementsToAdd;
      return addTo.addAll(c);
    }
    return Iterators.addAll(addTo, checkNotNull(elementsToAdd).iterator());
  }

  /**

                if (logger.isDebugEnabled()) {
                    logger.debug("Deleted {} old docs", deletedDocCount);
                }
                final BulkResponse response =
                        searchEngineClient.addAll(fessConfig.getIndexDocumentUpdateIndex(), docList, (doc, builder) -> {
                            final String configId = (String) doc.get(fessConfig.getIndexFieldConfigId());

            Set<String> excludes = new HashSet<>();
            if ( map.get(TestProperties.EXCLUDE_TEST_MUTATIONS) != null ) {
                excludes.addAll(Arrays.asList(map.get(TestProperties.EXCLUDE_TEST_MUTATIONS).split("\\s*,\\s*")));
            }
            if ( applyMutations != null && applyMutations.length > 0 && map.get(TestProperties.TEST_MUTATIONS) != null ) {

      Class<?> descendant, Class<?> ancestor) {
    Set<MethodSignature> methods = newHashSet();
    for (Class<?> clazz : getClassesBetween(descendant, ancestor)) {
      methods.addAll(getPublicStaticMethods(clazz));
    }
    return methods;
  }

  private static Set<MethodSignature> getPublicStaticMethods(Class<?> clazz) {
    Set<MethodSignature> publicStaticMethods = newHashSet();

      Class<?> descendant, Class<?> ancestor) {
    Set<MethodSignature> methods = newHashSet();
    for (Class<?> clazz : getClassesBetween(descendant, ancestor)) {
      methods.addAll(getPublicStaticMethods(clazz));
    }
    return methods;
  }

  private static Set<MethodSignature> getPublicStaticMethods(Class<?> clazz) {
    Set<MethodSignature> publicStaticMethods = newHashSet();

    set.remove("b");
    set.addAll(newArrayList("A", "B", "C"));
    assertThat(tail).containsExactly("c", "A", "B", "C").inOrder();
  }

  public void testSkip_structurallyModifiedSkipSomeList() throws Exception {
    List<String> list = newArrayList("a", "b", "c");
    Iterable<String> tail = skip(list, 1);
    list.subList(1, 3).clear();
    list.addAll(0, newArrayList("A", "B", "C"));

    private final String name;

    NamedObject(String name) {
      this.name = Preconditions.checkNotNull(name);
    }

    NamedObject addPeers(String... names) {
      peerNames.addAll(ImmutableList.copyOf(names));
      return this;
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof NamedObject) {
        NamedObject that = (NamedObject) obj;

    body: String = "",
    inTunnel: Boolean = false,
    socketPolicy: SocketPolicy = KeepOpen,
  ) : this(
    Builder()
      .apply {
        this.code = code
        this.headers.addAll(headers)
        if (inTunnel) inTunnel()
        this.body(body)
        this.socketPolicy = socketPolicy
      },
  )

  private constructor(builder: Builder) {
    this.status = builder.status