items.add(SuggestItem.parseSource(source));
            }
        }

        return new PopularWordsResponse(index, searchResponse.getTook().getMillis(), words, searchResponse.getHits().getTotalHits().value(),
                items);
    }

        });
        final OpenSearchResultList<OpenSearchAccessResult> targetList = new OpenSearchResultList<>();
        final SearchHits hits = response.getHits();
        final TotalHits totalHits = hits.getTotalHits();
        final long totalHitsValue = totalHits != null ? totalHits.value() : 0;
        targetList.setTotalHits(totalHitsValue);
        targetList.setTookInMillis(response.getTook().getMillis());

                .setSize(0)
                .setTrackTotalHits(true)
                .execute()
                .actionGet(settings.getSearchTimeout());
        return response.getHits().getTotalHits().value();
    }

            }
        }
        firstWords.addAll(secondWords);
        firstItems.addAll(secondItems);
        return new SuggestResponse(index, searchResponse.getTook().getMillis(), firstWords, searchResponse.getHits().getTotalHits().value(),
                firstItems);
    }

    /**
     * Checks if the first word matches.
     * @param singleWordQuery True if it is a single word query.

                    .actionGet(settings.getSearchTimeout());
            String scrollId = response.getScrollId();

            final Map<String, Object>[] array = new Map[(int) response.getHits().getTotalHits().value()];

            int count = 0;
            try {
                while (scrollId != null) {
                    final SearchHit[] hits = response.getHits().getHits();

            final SearchRequestBuilder builder = c.prepareSearch(index).setSize(0).setTrackTotalHits(true);
            callback.accept(builder);
            return builder.execute();
        }).getHits().getTotalHits();
        return totalHits != null ? (int) totalHits.value() : 0;
    }

    /**
     * Retrieves a single document from the OpenSearch index by session ID and URL.
     *

                .setQuery(QueryBuilders.termQuery("field", "value1"))
                .execute()
                .actionGet()
                .getHits()
                .getTotalHits()
                .value();
        assertEquals(0, count);
    }

    @Test
    public void testDeleteByQueryWithNoMatches() {
        // Test delete with query that matches nothing

                .setQuery(queryBuilder)
                .setTrackTotalHits(true)
                .execute()
                .actionGet(suggestSettings.getSearchTimeout());
        return searchResponse.getHits().getTotalHits().value();
    }

    private String getSearchAlias(final String index) {
        return index;
    }

    private String getUpdateAlias(final String index) {
        return index + ".update";

                .setSize(0)
                .setTrackTotalHits(true)
                .execute()
                .actionGet(fessConfig.getIndexSearchTimeout());
        final TotalHits totalHits = countResponse.getHits().getTotalHits();
        if (totalHits != null) {
            return totalHits.value();
        }
        return 0;
    }

    /**
     * Deletes all documents associated with the specified session ID.
     *

            return target;
        }
    }

    private static class TestOpenSearchResultList extends OpenSearchResultList<OpenSearchAccessResult> {
        @Override
        public long getTotalHits() {
            return 0;
        }
    }

    private static class TestAccessResult implements AccessResult<String> {
        @Override