WARNING //
    }

    /**
     * Gets the hint about the source of the problem. While the syntax of this hint is unspecified and depends on the
     * creator of the problem, the general expectation is that the hint provides sufficient information to the user to
     * track the problem back to its origin. A concrete example for such a source hint can be the file path or URL from
     * which the settings were read.
     *

//
// If content implements Tagger then the returned Reader
// returns ETag of the content. Otherwise, it returns
// nil as ETag.
//
// Wrap provides an adapter for io.Reader implementations
// that don't implement the Tagger interface.
// It is mainly used to provide a high-level io.Reader
// access to the ETag computed by a low-level io.Reader:
//
//	content := etag.NewReader(r.Body, nil)
//

 */
package org.codelibs.fess.crawler;

import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

/**
 * Constants used in the fess-crawler.
 * This class provides a collection of constant values for HTTP methods, status codes,
 * transformer names, boolean values, character encodings, date/time formats, and XML features.
 * It is designed to avoid the instantiation.
 */

 * It extends the AbstractTransformer class.
 *
 * <p>
 * This transformer extracts the binary content from the response body of a web resource,
 * stores it as a byte array in the ResultData, and provides a method to retrieve this data
 * as a ByteArrayInputStream.
 * </p>
 *
 * <p>
 * The transform method takes a ResponseData object, checks if it has a response body,

import org.opensearch.index.query.QueryBuilder;
import org.opensearch.transport.client.Client;

/**
 * SuggestIndexWriter is an implementation of the SuggestWriter interface that provides methods to write, delete,
 * and delete by query suggest items in an OpenSearch index.
 */
public class SuggestIndexWriter implements SuggestWriter {
    /**
     * Constructs a new {@link SuggestIndexWriter}.
     */

import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Random;
import java.util.Set;
import java.util.TreeSet;
import org.jspecify.annotations.NullUnmarked;

/**
 * Provides supporting data for performance notes in the documentation of {@link
 * Ordering#sortedCopy} and {@link Ordering#immutableSortedCopy}, as well as for automated code
 * suggestions.
 *
 */
@NullUnmarked

import org.eclipse.aether.version.Version;
import org.eclipse.aether.version.VersionConstraint;
import org.eclipse.aether.version.VersionScheme;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Provides information about the current Maven runtime.
 */
@Named
@Singleton
public class DefaultRuntimeInformation implements RuntimeInformation {
    private final Logger logger = LoggerFactory.getLogger(getClass());

import org.apache.maven.api.Version;
import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 * Represents the result of a version range resolution request. This interface provides access to
 * information about resolved versions that match a version range constraint, including any exceptions
 * that occurred during resolution, the available versions, and their source repositories.
 *

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

import jakarta.annotation.Resource;

/**
 * Service class for managing file authentication configurations.
 * This service provides operations for retrieving, storing, and deleting
 * file authentication settings used by the Fess search engine.
 */
public class FileAuthenticationService {

    /**

import org.dbflute.s2dao.metadata.TnBeanMetaDataFactory;
import org.dbflute.twowaysql.factory.SqlAnalyzerFactory;

/**
 * Implementation of DBFlute's InvokerAssistant interface for OpenSearch integration.
 * This class provides basic scaffolding for DBFlute behavior invoker assistance,
 * primarily returning null implementations as placeholders for OpenSearch-specific functionality.
 *
 */