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();

suggester.indexer()
    .indexFromDocument(reader, 2, 100)  // threads=2, batch=100
    .getResponse();
```

### Index from Query Logs

```java
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;

// Add suggestions from search query logs
QueryLog queryLog = new QueryLog("user search query", "user123");
suggester.indexer().indexFromQueryLog(queryLog);
```

### Popular Words Analytics

```java

 *   <li>{@link #createIndexIfNothing()}: Creates a new index if no index exists.</li>
 *   <li>{@link #createNextIndex()}: Creates a new index and replaces the current update alias with the new index.</li>
 *   <li>{@link #switchIndex()}: Switches the search alias to the current update index.</li>
 *   <li>{@link #removeDisableIndices()}: Removes disabled indices.</li>
 *   <li>{@link #indexer()}: Creates a new SuggestIndexer for indexing suggestions.</li>

            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.

        }

        if (limitPercentage.endsWith("%")) {
            this.limitPercentage = Integer.parseInt(limitPercentage.substring(0, limitPercentage.length() - 1));
        } else {
            this.limitPercentage = Integer.parseInt(limitPercentage);
        }

        if (this.limitPercentage > 100) {
            this.limitPercentage = 100;

        super.insert(accessResult, accessResult.getId() == null ? OpType.CREATE : OpType.INDEX);
    }

    /**
     * Updates an access result in the OpenSearch index.
     *
     * @param accessResult The access result to update.
     */
    @Override
    public void update(final OpenSearchAccessResult accessResult) {
        super.insert(accessResult, OpType.INDEX);
    }

    /**

        BytesRef pendingOutput = fst.outputs.getNoOutput();
        fst.getFirstArc(scratchArc);
        BytesRef matchOutput = null;

        int index = 0;
        while (start + index < src.length) {
            final int codePoint = Character.codePointAt(src, start + index, src.length);
            if (fst.findTargetArc(ignoreCase ? Character.toLowerCase(codePoint) : codePoint, scratchArc, scratchArc, fstReader) == null) {

    }

    /**
     * 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;
    }

    /**

    }

    /**
     * Creates a bulk line for OpenSearch indexing from the given parameters.
     *
     * @param index the name of the OpenSearch index
     * @param type the type of the document (deprecated in newer versions of OpenSearch)
     * @param item the SuggestItem containing the data to be indexed
     * @return a string representing the bulk line for OpenSearch indexing