httpClient = closeableHttpClient;
    }

    /**
     * Destroys the HTTP client.
     */
    @PreDestroy
    public void destroy() {
        if (httpClient != null) {
            try {
                httpClient.close();
            } catch (final IOException e) {
                logger.error("Failed to close httpClient.", e);
            }
        }
    }

    /**

/**
 * A policy for how the pool should treat a specific address.
 */
class AddressPolicy(
  /**
   * How many concurrent calls should be possible to make at any time.
   * The pool will routinely try to pre-emptively open connections to satisfy this minimum.
   * Connections will still be closed if they idle beyond the keep-alive but will be replaced.
   */
  @JvmField val minimumConcurrentCalls: Int = 0,

     */
    public static List<String> getKeywords(final String q, final String[] fields) {
        final List<String> keywords = new ArrayList<>();
        final List<TermQuery> termQueryList;
        try {
            final StandardQueryParser parser = new StandardQueryParser();
            parser.setDefaultOperator(StandardQueryConfigHandler.Operator.AND);

            jobExecutor.addShutdownListener(() -> ComponentUtil.getProcessHelper().destroyProcess(sessionId));
        }

        final TimeoutTask timeoutTask = createTimeoutTask();
        try {
            executePython();
        } catch (final Exception e) {
            logger.warn("Failed to run python command.", e);
            resultBuf.append(e.getMessage()).append("\n");
        } finally {

    }

    public void test_throwAndCatch() {
        // Test throwing and catching the exception
        String expectedType = "OAuth";
        String expectedMessage = "OAuth token is invalid";

        try {
            throw new InvalidAccessTokenException(expectedType, expectedMessage);
        } catch (InvalidAccessTokenException e) {
            assertEquals(expectedType, e.getType());

 * When making an HTTPS connection through an HTTP proxy, the proxy may issue an authentication challenge. OkHttp will call the proxy [authenticator](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-authenticator/) and try again.
 * When making TLS connections with multiple [connection specs](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-connection-spec/), these are attempted in sequence until the TLS handshake succeeds.

   *
   * @param message message to use upon assertion failure
   */
  protected void expectNullKeyMissingWhenNullKeysUnsupported(String message) {
    try {
      assertFalse(message, getMap().containsKey(null));
    } catch (NullPointerException tolerated) {
      // Tolerated
    }
  }

  /**

     */
    public static Iterator<URL> getResources(final ClassLoader loader, final String name) {
        assertArgumentNotNull("loader", loader);
        assertArgumentNotEmpty("name", name);

        try {
            final Enumeration<URL> e = loader.getResources(name);
            return new EnumerationIterator<>(e);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

        };

        final ResponseData responseData = new ResponseData();
        responseData.setUrl("http://example.com/");
        responseData.addMetaData("X-Robots-Tag", "noindex,nofollow");

        try {
            transformer.processXRobotsTag(responseData, new ResultData());
            fail();
        } catch (ChildUrlsException e) {
            assertTrue(e.getChildUrlList().isEmpty());

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