* of the document. It also handles zip bomb prevention and embedded document extraction.
 * </p>
 *
 * <p>
 * The {@link ContentWriter} functional interface is used to abstract the process of writing content to a writer.
 * </p>
 *
 * <p>
 * The class uses temporary files for processing large input streams and ensures that these files are deleted after
 * processing.
 * </p>
 *

import org.codelibs.fess.crawler.entity.ResultData;
import org.codelibs.fess.crawler.exception.CrawlerSystemException;
import org.dbflute.utflute.core.PlainTestCase;

/**
 * Test class for AbstractTransformer.
 * Tests the abstract transformer implementation and its name management functionality.
 */
public class AbstractTransformerTest extends PlainTestCase {

    /**
     * Concrete implementation of AbstractTransformer for testing
     */

import com.google.common.hash.HashFunction;
import com.google.common.hash.Hashing;

import jakarta.annotation.Resource;

/**
 * Abstract base class for crawler services that interact with OpenSearch.
 *
 * @author shinsuke
 *
 */
public abstract class AbstractCrawlerService {
    /**
     * Creates a new instance of AbstractCrawlerService.
     */
    public AbstractCrawlerService() {
        // NOP

import org.codelibs.fess.crawler.rule.Rule;
import org.codelibs.fess.crawler.rule.RuleManager;
import org.dbflute.utflute.core.PlainTestCase;

/**
 * Test class for AbstractRule.
 * Tests the abstract rule implementation and its common functionality.
 */
public class AbstractRuleTest extends PlainTestCase {

    /**
     * Concrete implementation of AbstractRule for testing
     */