default SuggestItem[] mergeItems(final SuggestItem[] items) {
        final Set<String> mergedIdSet = new HashSet<>();
        final List<SuggestItem> mergedList = new ArrayList<>(items.length);

        for (final SuggestItem item1 : items) {
            final String item1Id = item1.getId();
            if (mergedIdSet.contains(item1Id)) {

        QueryLog queryLog = new QueryLog("content:検索エンジン", null);
        List<SuggestItem> items = defaultContentsParser.parseQueryLog(queryLog, supportedFields, tagFieldNames, roleFieldName,
                createDefaultReadingConverter(), createDefaultNormalizer());
        SuggestItem item = items.get(0);
        assertEquals("検索エンジン", item.getText());
        assertEquals(SuggestItem.Kind.QUERY, item.getKinds()[0]);
        assertEquals(1, item.getQueryFreq());

import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.fess.suggest.request.Response;

public class SuggestResponse implements Response {
    protected final String index;

    protected final long tookMs;

    protected final List<String> words;

    protected final int num;

    protected final long total;

    protected final List<SuggestItem> items;

import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.fess.suggest.request.Response;

public class PopularWordsResponse implements Response {
    protected final String index;

    protected final long tookMs;

    protected final List<String> words;

    protected final int num;

    protected final long total;

    protected final List<SuggestItem> items;

import org.codelibs.fess.suggest.converter.ReadingConverter;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;
import org.codelibs.fess.suggest.normalizer.Normalizer;

public interface ContentsParser {
    SuggestItem parseSearchWords(String[] words, String[][] readings, String[] fields, String[] tags, String roles[], long score,

            final boolean update) {
        final BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();

        final SuggestItem[] mergedItems = mergeItems(items);
        if (mergedItems.length == 0) {
            return new SuggestWriterResult();
        }

        for (final SuggestItem item : mergedItems) {

    }

    public List<String> getRoles() {
        return roles;
    }

    public SuggestItem toSuggestItem() {
        final String[][] readingArray =
                this.getReadings().stream().map(reading -> new String[] { reading }).toArray(count -> new String[count][]);
        return new SuggestItem(new String[] { this.getElevateWord() }, readingArray, fields.toArray(new String[fields.size()]), 1, 0,

import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.fess.suggest.settings.SuggestSettings;
import org.opensearch.client.Client;
import org.opensearch.index.query.QueryBuilder;

public class SuggestBulkFileWriter implements SuggestWriter {
    @Override
    public SuggestWriterResult write(final Client client, final SuggestSettings settings, final String index, final SuggestItem[] items,
            final boolean update) {

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 org.opensearch.action.search.SearchResponse;

readings[1] = new String[] { "enjin", "fuga" };
String[] tags = new String[] { "tag1", "tag2" };
String[] roles = new String[] { "role1", "role2", "role3" };
suggester.indexer().index(new SuggestItem(new String[] { "検索", "エンジン" }, readings, 1, tags, roles, SuggestItem.Kind.DOCUMENT));
```

### Add suggest documents from source of index

```java
DocumentReader reader = new ESSourceReader(
    client,
    suggester.settings(),