@Override
    public QueryBuilder execute(final QueryContext context, final Query query, final float boost) {
        if (logger.isDebugEnabled()) {
            logger.debug("MatchAllQuery: query={}, boost={}", query, boost);
        }
        return QueryBuilders.matchAllQuery().boost(boost);
    }

        if (ORDER_RANDOM.equals(crawlOrder)) {
            return getList(OpenSearchUrlQueue.class, sessionId,
                    QueryBuilders.functionScoreQuery(QueryBuilders.matchAllQuery(),
                            new FunctionScoreQueryBuilder.FilterFunctionBuilder[] { new FunctionScoreQueryBuilder.FilterFunctionBuilder(

            return null;
        }).when(mockClearScrollBuilder).execute(any(ActionListener.class));

        final int deleted = fesenClient.deleteByQuery("test-index", QueryBuilders.matchAllQuery());

        assertEquals(1, deleted);
        verify(mockClearScrollBuilder, times(1)).addScrollId("scroll1");
    }

    /**
     * Test: deleteByQuery deprecated method delegates to new method

    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. */

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

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return searchEngineClient.search(fessConfig.getIndexDocumentSearchIndex(), queryRequestBuilder -> {
            queryRequestBuilder.setQuery(QueryBuilders.matchAllQuery());
            final TermsAggregationBuilder termsBuilder = AggregationBuilders.terms(fessConfig.getIndexFieldSegment())
                    .field(fessConfig.getIndexFieldSegment())

        doMatchAll(opLambda);
    }

    protected void doMatchAll(ConditionOptionCall<MatchAllQueryBuilder> opLambda) {
        MatchAllQueryBuilder builder = QueryBuilders.matchAllQuery();
        regQ(builder);
        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    // ===================================================================================

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

        doMatchAll(opLambda);
    }

    protected void doMatchAll(ConditionOptionCall<MatchAllQueryBuilder> opLambda) {
        MatchAllQueryBuilder builder = QueryBuilders.matchAllQuery();
        regQ(builder);
        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    // ===================================================================================

        doMatchAll(opLambda);
    }

    protected void doMatchAll(ConditionOptionCall<MatchAllQueryBuilder> opLambda) {
        MatchAllQueryBuilder builder = QueryBuilders.matchAllQuery();
        regQ(builder);
        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    // ===================================================================================