* [Build simple API service with Python FastAPI — Part 1](https://dev.to/cuongld2/build-simple-api-service-with-python-fastapi-part-1-581o) by [cuongld2](https://dev.to/cuongld2).

            gotException.countDown();
            throw expected;
          }
          return immediateFuture("a");
        };

    ExecutorService service = newSingleThreadExecutor();
    ListenableFuture<String> futureResult = transformAsync(input, function, service);

    input.set("value");
    inFunction.await();
    futureResult.cancel(true);
    shouldCompleteFunction.countDown();

            gotException.countDown();
            throw expected;
          }
          return immediateFuture("a");
        };

    ExecutorService service = newSingleThreadExecutor();
    ListenableFuture<String> futureResult = transformAsync(input, function, service);

    input.set("value");
    inFunction.await();
    futureResult.cancel(true);
    shouldCompleteFunction.countDown();

import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service class for managing duplicate host configuration CRUD operations.
 * This service provides functionality to create, read, update, and delete
 * duplicate host configurations used by the Fess crawler system.
 *

    CyclicBarrier barrier = new CyclicBarrier(2);
    // we need to make sure the error gets thrown on a different thread.
    ExecutorService service = newSingleThreadExecutor();
    try {
      SequentialExecutor executor = new SequentialExecutor(service);
      Runnable errorTask =
          () -> {
            throw new MyError();
          };
      Runnable barrierTask =
          () -> {

import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service class for managing request headers used in web crawling configurations.
 * This service provides CRUD operations for request headers that are applied
 * during web crawling to configure HTTP request behavior.
 *
 */
public class RequestHeaderService {

    /**

# Dex Quickstart Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)

     * Calls the static {@link #authenticate(HttpServletRequest,
     * HttpServletResponse, byte[])} method to perform NTLM authentication
     * for the specified servlet request.
     *
     * @param req The request being serviced.
     * @param resp The response.
     * @param challenge The domain controller challenge.
     * @throws IOException If an IO error occurs.
     * @throws ServletException If an error occurs.
     */
    /**

 */
package org.codelibs.fess.crawler.container;

import org.codelibs.fess.crawler.Crawler;
import org.codelibs.fess.crawler.helper.MemoryDataHelper;
import org.codelibs.fess.crawler.service.DataService;
import org.codelibs.fess.crawler.service.UrlQueueService;
import org.dbflute.utflute.lastadi.LastaDiTestCase;
import org.junit.jupiter.api.Test;

import jakarta.annotation.Resource;

/**
 * Test for LastaCrawlerContainer.
 */

import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.app.pager.ReqHeaderPager;
import org.codelibs.fess.app.service.RequestHeaderService;
import org.codelibs.fess.app.service.WebConfigService;
import org.codelibs.fess.app.web.CrudMode;
import org.codelibs.fess.app.web.api.ApiResult;
import org.codelibs.fess.app.web.api.ApiResult.ApiConfigResponse;