public void addClient(final List<String> regexList, final CrawlerClient client) {
        if (regexList == null || regexList.isEmpty()) {
            throw new CrawlerSystemException("A regular expression list is null or empty.");
        }
        if (client == null) {
            throw new CrawlerSystemException("CrawlerClient is null.");
        }
        for (final String regex : regexList) {
            if (StringUtil.isNotBlank(regex)) {

            final Settings settings) {
        super(indexSettings, name, settings);

        final List<String> tagList = Analysis.parseWordList(environment, settings, "tags", s -> s);
        if (tagList != null) {
            posTags.addAll(tagList);
        }
    }

    @Override
    public TokenStream create(final TokenStream tokenStream) {

        resetCollection();
        return getList().listIterator();
      }

      @Override
      protected void verify(List<E> elements) {
        expectContents(elements);
      }
    }.test();
  }

  public void testListIterator_tooLow() {
    assertThrows(IndexOutOfBoundsException.class, () -> getList().listIterator(-1));
  }

  public void testListIterator_tooHigh() {

  @ListFeature.Require(SUPPORTS_SET)
  public void testReplaceAll() {
    getList().replaceAll(e -> samples.e3());
    expectContents(Collections.nCopies(getNumElements(), samples.e3()));
  }

  @ListFeature.Require(SUPPORTS_SET)
  public void testReplaceAll_changesSome() {
    getList().replaceAll(e -> e.equals(samples.e0()) ? samples.e3() : e);
    E[] expected = createSamplesArray();

    assertTrue(
        "addAll(allPresent) should return true", getList().addAll(MinimalCollection.of(e0())));
    expectAdded(e0());
  }

  @CollectionFeature.Require(absent = SUPPORTS_ADD)
  @CollectionSize.Require(absent = ZERO)
  public void testAddAll_unsupportedAllPresent() {
    assertThrows(
        UnsupportedOperationException.class, () -> getList().addAll(MinimalCollection.of(e0())));
    expectUnchanged();
  }

   */
  public void testAddAtIndex_unsupportedPresent() {
    assertThrows(UnsupportedOperationException.class, () -> getList().add(0, e0()));
    expectUnchanged();
  }

  @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
  public void testAddAtIndex_supportedNotPresent() {
    getList().add(0, e3());
    expectAdded(0, e3());
  }

  @CollectionFeature.Require(FAILS_FAST_ON_CONCURRENT_MODIFICATION)

  public void testSubList_startNegative() {
    assertThrows(IndexOutOfBoundsException.class, () -> getList().subList(-1, 0));
  }

  public void testSubList_endTooLarge() {
    assertThrows(IndexOutOfBoundsException.class, () -> getList().subList(0, getNumElements() + 1));
  }

  public void testSubList_startGreaterThanEnd() {
    try {
      getList().subList(1, 0);
      fail("subList(1, 0) should throw");

  public void testSubList_startNegative() {
    assertThrows(IndexOutOfBoundsException.class, () -> getList().subList(-1, 0));
  }

  public void testSubList_endTooLarge() {
    assertThrows(IndexOutOfBoundsException.class, () -> getList().subList(0, getNumElements() + 1));
  }

  public void testSubList_startGreaterThanEnd() {
    try {
      getList().subList(1, 0);
      fail("subList(1, 0) should throw");

        "addAll(n, allPresent) should return true",
        getList().addAll(0, MinimalCollection.of(e0())));
    expectAdded(0, e0());
  }

  @ListFeature.Require(absent = SUPPORTS_ADD_WITH_INDEX)
  @CollectionSize.Require(absent = ZERO)
  public void testAddAllAtIndex_unsupportedAllPresent() {
    assertThrows(
        UnsupportedOperationException.class, () -> getList().addAll(0, MinimalCollection.of(e0())));
    expectUnchanged();
  }

   */
  public void testAddAtIndex_unsupportedPresent() {
    assertThrows(UnsupportedOperationException.class, () -> getList().add(0, e0()));
    expectUnchanged();
  }

  @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
  public void testAddAtIndex_supportedNotPresent() {
    getList().add(0, e3());
    expectAdded(0, e3());
  }

  @CollectionFeature.Require(FAILS_FAST_ON_CONCURRENT_MODIFICATION)