return null;
            }
        }

        /**
         * Gets the date of the storage object.
         * This method returns the same value as getLastModified().
         *
         * @return The date in milliseconds since epoch
         */
        @Override
        public long getDate() {
            return getLastModified();
        }

        awaitTermination(0);
    }

    /**
     * Waits for the crawling process to terminate for a specified duration.
     * @param millis The maximum time to wait in milliseconds. A value of 0 means wait indefinitely.
     */
    public void awaitTermination(final long millis) {
        if (parentThread != null) {
            try {
                parentThread.join(millis);

        assertEquals("newValue1", builder.initialSettings.get("key1"));
    }

    @Test
    public void testAddInitialSettingsWithNullValue() {
        // Test adding null value
        builder.addInitialSettings("nullKey", null);
        assertEquals(1, builder.initialSettings.size());
        assertTrue(builder.initialSettings.containsKey("nullKey"));

        assertNotNull(suggestItem.getTags());
        assertNotNull(suggestItem.getRoles());
    }

    @Test
    public void testToSuggestItemWithLargeBoost() {
        // Test toSuggestItem with large boost value
        String word = "large boost";
        float boost = Float.MAX_VALUE;
        List<String> readings = Arrays.asList("reading1");
        List<String> fields = Arrays.asList("field1");

        }
        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.

                .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";
    }