@Override
            public Optional<Source> getUserToolchainsSource() {
                return Optional.ofNullable(userToolchainsSource);
            }

            @Override
            public boolean equals(Object o) {
                return o instanceof DefaultToolchainsBuilderRequest that
                        && Objects.equals(installationToolchainsSource, that.installationToolchainsSource)

        // nothing
    }

    @Override
    public SuggestWriterResult write(final Client client, final SuggestSettings settings, final String index, final SuggestItem[] items,
            final boolean update) {
        final BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();

        final SuggestItem[] mergedItems = mergeItems(items);
        if (mergedItems.length == 0) {

     * @return true if the user can login, false otherwise
     * @throws UnsupportedOperationException always thrown as this method is not supported
     */
    @Override
    public boolean checkUserLoginable(final LoginCredential credential) {
        throw new UnsupportedOperationException("checkUserLoginable is not supported.");
    }

    /**

        Set<Map.Entry<String, Object>> entrySet = docMap.entrySet();
        assertEquals(4, entrySet.size());

        String[] keys = entrySet.stream().map(Map.Entry::getKey).toArray(String[]::new);

        boolean langFirst = "lang".equals(keys[0]);
        assertTrue("lang should be first or sorted normally", langFirst || Arrays.asList(keys).contains("lang"));

        assertTrue(Arrays.asList(keys).contains("apple"));

     * @return the number of documents processed
     */
    public static long scroll(final String index, final Function<SearchHit, Boolean> callback) {
        final SearchEngineClient client = ComponentUtil.getSearchEngineClient();
        return client.<SearchHit> scrollSearch(index, searchRequestBuilder -> true, (searchResponse, hit) -> hit,

    /**
     * Checks if the given filename is a log file.
     *
     * @param name the filename to check
     * @return true if the filename ends with .log or .log.gz, false otherwise
     */
    public static boolean isLogFilename(final String name) {
        return name.endsWith(".log") || name.endsWith(".log.gz");
    }

    private HtmlResponse asIndexHtml() {
        return asHtml(path_AdminLog_AdminLogJsp).renderWith(data -> {

        assertNotNull(exception.getStackTrace());
        assertTrue(exception.getStackTrace().length > 0);

        // Verify that the stack trace contains this test method
        boolean foundTestMethod = false;
        for (StackTraceElement element : exception.getStackTrace()) {
            if (element.getMethodName().equals("test_stackTrace") && element.getClassName().equals(this.getClass().getName())) {

          return null;
        },
        /* userPassedSupplier= */ false);
  }

  private static <T extends Throwable> T doAssertThrows(
      Class<T> expectedThrowable, ThrowingSupplier supplier, boolean userPassedSupplier) {
    checkNotNull(expectedThrowable);
    checkNotNull(supplier);
    Predicate<Throwable> predicate = INSTANCE_OF.get(expectedThrowable);
    if (predicate == null) {

          return null;
        },
        /* userPassedSupplier= */ false);
  }

  private static <T extends Throwable> T doAssertThrows(
      Class<T> expectedThrowable, ThrowingSupplier supplier, boolean userPassedSupplier) {
    checkNotNull(expectedThrowable);
    checkNotNull(supplier);
    Predicate<Throwable> predicate = INSTANCE_OF.get(expectedThrowable);
    if (predicate == null) {

          return null;
        },
        /* userPassedSupplier= */ false);
  }

  private static <T extends Throwable> T doAssertThrows(
      Class<T> expectedThrowable, ThrowingSupplier supplier, boolean userPassedSupplier) {
    checkNotNull(expectedThrowable);
    checkNotNull(supplier);
    Predicate<Throwable> predicate = INSTANCE_OF.get(expectedThrowable);
    if (predicate == null) {