if (keyList == null || keyList.isEmpty()) {
            throw new CrawlerSystemException("The key list is empty.");
        }
        keyList.stream().distinct().forEach(key -> addExtractor(key, extractor));
    }

    /**
     * Retrieves an extractor for the specified key.
     * If multiple extractors are associated with the key, returns a composite extractor

import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.lang.reflect.Field;
import java.util.stream.Stream;

import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.util.stream.Stream;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.params.ParameterizedTest;

import java.io.ByteArrayOutputStream;
import java.lang.Thread.UncaughtExceptionHandler;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.stream.Stream;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Tests for SimpleGenericBloomFilter and derived BloomFilter views.
 *

            @SuppressWarnings("unchecked")
            final List<Map<String, Object>> fileList = (List<Map<String, Object>>) contentMap.get("file");
            return fileList.stream().map(fileMap -> {
                try {
                    final String path = fileMap.get("path").toString();
                    final Date timestamp =

          null
        }
      }
    }

    /**
     * Returns a new unbuffered output stream to write the value at [index]. If the underlying
     * output stream encounters errors when writing to the filesystem, this edit will be aborted
     * when [commit] is called. The returned output stream does not throw IOExceptions.
     */
    fun newSink(index: Int): Sink {
      synchronized(this@DiskLruCache) {

			var dopts []s2.ReaderOption
			if off > 0 || decOff > 0 {
				// We are not starting at the beginning, so ignore stream identifiers.
				dopts = append(dopts, s2.ReaderIgnoreStreamIdentifier())
			}
			s2Reader := s2.NewReader(inputReader, dopts...)
			// Apply the skipLen and limit on the decompressed stream.
			if decOff > 0 {
				if err = s2Reader.Skip(decOff); err != nil {
					// Call the cleanup funcs

import java.io.InputStreamReader;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.stream.Stream;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.suggest.analysis.SuggestAnalyzer;

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;