return null;
            }

            @Override
            public java.util.Collection<String> getHeaders(String name) {
                return null;
            }

            @Override
            public java.util.Collection<String> getHeaderNames() {
                return null;
            }

            @Override

        QueryResponseList qrList = new QueryResponseList(documentList, 0, 10, 0);

        Collection<Map<String, Object>> toRemove = Arrays.asList(doc2);
        assertTrue(qrList.removeAll(toRemove));
        assertEquals(2, qrList.size());
        assertFalse(qrList.contains(doc2));

        Collection<Map<String, Object>> toRetain = Arrays.asList(doc1);
        assertTrue(qrList.retainAll(toRetain));

 */
package org.codelibs.fess.api;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.Principal;
import java.util.Collection;
import java.util.Enumeration;
import java.util.Locale;
import java.util.Map;

import jakarta.servlet.AsyncContext;
import jakarta.servlet.DispatcherType;
import jakarta.servlet.RequestDispatcher;

package com.google.common.math;

import com.google.common.annotations.GwtCompatible;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.math.BigInteger;
import java.math.RoundingMode;

/**
 * A collection of preconditions for math functions.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
final class MathPreconditions {
  @CanIgnoreReturnValue
  static int checkPositive(String role, int x) {
    if (x <= 0) {

import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.base.Stopwatch;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;

import static org.codelibs.fess.app.web.admin.group.AdminGroupAction.getGroup;
import static org.codelibs.fess.app.web.admin.group.AdminGroupAction.validateAttributes;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.app.pager.GroupPager;
import org.codelibs.fess.app.service.GroupService;

 */
package org.codelibs.fess.app.web.api.admin.boostdoc;

import static org.codelibs.fess.app.web.admin.boostdoc.AdminBoostdocAction.getBoostDocumentRule;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.beans.util.CopyOptions;
import org.codelibs.fess.app.pager.BoostDocPager;

 *  New: `ConnectionPool.setPolicy()` configures a minimum connection pool size for a target
    address. Use this to proactively open HTTP connections.

    Connections opened to fulfill this policy are subject to the connection pool's
    `keepAliveDuration` but do not count against the pool-wide `maxIdleConnections` limit.

            try {
                Socket clientSocket = serverSocket.accept();
                // In a real implementation, this would handle RPC requests
                // For the mock, we just accept connections and close them
                clientSocket.close();
            } catch (IOException e) {
                if (running.get()) {
                    log.debug("Error accepting client connection", e);
                }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(absent = {ZERO, ONE})
  public void testRemove_duplicate() {
    ArrayWithDuplicate<E> arrayAndDuplicate = createArrayWithDuplicateElement();
    collection = getSubjectGenerator().create(arrayAndDuplicate.elements);
    E duplicate = arrayAndDuplicate.duplicate;

    int firstIndex = getList().indexOf(duplicate);
    int initialSize = getList().size();