protected int maxRetryCount = 5;
    /** Limit of document size. */
    protected long limitOfDocumentSize = 50000;
    /** Query builder. */
    protected QueryBuilder queryBuilder = QueryBuilders.matchAllQuery();
    /** Limit percentage. */
    protected int limitPercentage = 100;
    /** Limit number. */
    protected long limitNumber = -1;
    /** Sort list. */

    }

    /**
     * Returns the total number of words in the suggestion index.
     * @return The total number of words.
     */
    public long getAllWordsNum() {
        return getNum(QueryBuilders.matchAllQuery());
    }

    /**
     * Returns the number of document words in the suggestion index.
     * @return The number of document words.
     */
    public long getDocumentWordsNum() {

                }
            } else if (queryBuilder != null) {
                builder.setQuery(queryBuilder);
            } else {
                builder.setQuery(QueryBuilders.matchAllQuery());
            }
            if (sortBuilders != null) {
                for (SortBuilder<?> sortBuilder : sortBuilders) {
                    builder.addSort(sortBuilder);
                }
            }

    public void testDeleteByQueryWithInvalidIndex() {
        // Test delete with non-existent index
        SuggestUtil.deleteByQuery(client, settings, "nonexistent_index", QueryBuilders.matchAllQuery());
    }

    @Test
    public void testDeleteScrollContext() {
        // Test with null scrollId (should not throw exception)
        SuggestUtil.deleteScrollContext(client, null);

        try {
            final QueryBuilder queryBuilder;
            if (Strings.isNullOrEmpty(q)) {
                queryBuilder = QueryBuilders.matchAllQuery();
            } else {
                final boolean prefixQuery = !q.endsWith(" ") && !q.endsWith("　");
                List<String> readingList = new ArrayList<>();

    /**
     * Deletes all suggest items.
     * @return The SuggestDeleteResponse.
     */
    public SuggestDeleteResponse deleteAll() {
        final SuggestDeleteResponse response = deleteByQuery(QueryBuilders.matchAllQuery());
        restoreElevateWord();
        return response;
    }

    /**
     * Deletes document words.
     * @return The SuggestDeleteResponse.
     */