/**
 * This class contains constants used in the Fess Suggest module.
 * It is a utility class and should not be instantiated.
 */
public final class SuggestConstants {
    // Private constructor to prevent instantiation
    private SuggestConstants() {
    }

    /** An empty string constant. */
    public static final String EMPTY_STRING = "";

    /** The system property name for user dictionary encoding. */

                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT));
        items.add(new SuggestItem(new String[] { "example" }, readings, new String[] { "content" }, 2, 0, -1, new String[] { "tag2" },
                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT));

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import org.codelibs.fess.suggest.Suggester;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.opensearch.runner.OpenSearchRunner;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

import static org.codelibs.opensearch.runner.OpenSearchRunner.newConfigs;
import static org.junit.Assert.assertNotNull;

import org.codelibs.fess.suggest.Suggester;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.opensearch.runner.OpenSearchRunner;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import org.codelibs.fess.suggest.Suggester;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.opensearch.runner.OpenSearchRunner;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.QUERY));
        items.add(new SuggestItem(new String[] { "word2" }, readings, new String[] { "content" }, 0, 5, -1, new String[] { "tag2" },
                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.QUERY));

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.codelibs.fess.suggest.constants.FieldNames;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.opensearch.action.search.SearchResponse;
import org.opensearch.search.SearchHit;

/**

        /*
         * TODO if (initialized) { return; }
         *
         * if (tokenizerFactory == null) { final String path = System.getProperty(SuggestConstants.USER_DICT_PATH);
         * final String encoding = System.getProperty(SuggestConstants.USER_DICT_ENCODING); final Map<String, String>
         * args = new HashMap<>(); args.put("mode", "normal"); args.put("discardPunctuation", "false"); if

import java.util.List;
import java.util.Map;

import org.codelibs.fess.suggest.concurrent.Deferred;
import org.codelibs.fess.suggest.constants.FieldNames;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.fess.suggest.exception.SuggesterException;
import org.codelibs.fess.suggest.request.Request;
import org.opensearch.action.search.SearchRequestBuilder;

import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

import org.codelibs.fess.suggest.constants.SuggestConstants;

/**
 * Utility class for merging SuggestItem objects.
 * Centralizes merge logic to reduce complexity in SuggestItem.
 *
 * <p>This class provides methods for merging two SuggestItem instances,