preloadDate = new String(bytes, Constants.UTF_8);
            if (preloadDate.indexOf("<urlset") >= 0) {
                // XML Sitemaps
                bis.reset();
                return parseXmlSitemaps(bis);
            }
            if (preloadDate.indexOf("<sitemapindex") >= 0) {
                // XML Sitemaps Index
                bis.reset();
                return parseXmlSitemapsIndex(bis);
            }

    }

    /**
     * Indexes a single suggest item.
     * @param item The suggest item to index.
     * @return The SuggestIndexResponse.
     */
    public SuggestIndexResponse index(final SuggestItem item) {
        return index(new SuggestItem[] { item });
    }

    /**
     * Indexes multiple suggest items.
     * @param items The suggest items to index.
     * @return The SuggestIndexResponse.

import org.opensearch.action.admin.indices.alias.get.GetAliasesResponse;
import org.opensearch.action.admin.indices.create.CreateIndexResponse;
import org.opensearch.action.admin.indices.exists.indices.IndicesExistsResponse;
import org.opensearch.action.admin.indices.get.GetIndexResponse;
import org.opensearch.action.admin.indices.refresh.RefreshResponse;
import org.opensearch.action.search.SearchResponse;

        suggester.indexer().deleteBadWord("[");
        suggester.indexer().deleteBadWord("ｴﾝｼﾞﾝ");
        assertEquals(0, suggester.settings().badword().get(false).length);
    }

    @Test
    public void test_popularWords() throws Exception {
        SuggestItem[] items = getPopularWordsItemSet2();
        suggester.indexer().index(items);
        suggester.refresh();

Shinsuke Sugaya <******@****.***> 1444529815 +0900

    });
```

## Advanced Usage

### Index from Existing Documents

```java
import org.codelibs.fess.suggest.index.contents.document.ESSourceReader;

// Index suggestions from existing Elasticsearch documents
DocumentReader reader = new ESSourceReader(
    client,
    suggester.settings(),
    "content-index",        // source index
    "document"             // document type
);

        return client.index(request);
    }

    /**
     * Executes an index request asynchronously.
     *
     * @param request The index request.
     * @param listener The response listener.
     */
    @Override
    public void index(final IndexRequest request, final ActionListener<IndexResponse> listener) {
        client.index(request, listener);
    }

    /**

import org.codelibs.fess.suggest.util.SuggestUtil;
import org.opensearch.action.admin.indices.analyze.AnalyzeAction;
import org.opensearch.action.admin.indices.analyze.AnalyzeAction.AnalyzeToken;
import org.opensearch.action.admin.indices.exists.indices.IndicesExistsResponse;
import org.opensearch.action.admin.indices.settings.get.GetSettingsResponse;
import org.opensearch.action.search.SearchResponse;

    }

    /**
     * Gets the OpenSearch index name.
     *
     * @return The index name.
     */
    public String getIndex() {
        return index;
    }

    /**
     * Sets the OpenSearch index name.
     *
     * @param index The index name.
     */
    public void setIndex(final String index) {
        this.index = index;
    }

    /**

     */
    public SuggestSettingsBuilder bulkTimeout(final String timeout) {
        timeoutSettings.bulkTimeout = timeout;
        return this;
    }

    /**
     * Sets the indices timeout.
     * @param timeout The indices timeout.
     * @return This builder instance.
     */
    public SuggestSettingsBuilder indicesTimeout(final String timeout) {
        timeoutSettings.indicesTimeout = timeout;