Suggester suggester = createSuggester();

        // Multiple consecutive calls should be safe
        suggester.createIndexIfNothing();
        suggester.createIndexIfNothing();
        suggester.createIndexIfNothing();

        // Should still be able to use the index
        suggester.refresh();
        assertEquals("Index should work normally", 0, suggester.getAllWordsNum());

 *   <li>{@link #refresh()}: Refreshes the suggestion indices.</li>
 *   <li>{@link #shutdown()}: Shuts down the thread pool.</li>
 *   <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>

        final Suggester suggester = Suggester.builder().build(client, "resource-test");

        // createIndexIfNothing internally calls getDefaultMappings and getDefaultIndexSettings
        boolean created = suggester.createIndexIfNothing();

        assertTrue("Index should be created successfully", created);

        // Verify index exists

        public MockSuggestSettings settings() {
            return settings;
        }

        public void refresh() {
            // Mock implementation
        }

        public void createIndexIfNothing() {
            // Mock implementation
        }

        public String getIndex() {
            return "fess.suggest";
        }

        public long getAllWordsNum() {

                } catch (final SuggestSettingsException e) {
                    logger.warn("Failed to add suggest field: field={}", field, e);
                }
            }));
            suggester.createIndexIfNothing();
        } catch (final Exception e) {
            logger.warn("Failed to initialize Suggester.", e);
        }
    }

    /**
     * Gets the suggester instance.
     *

        runner.admin().indices().prepareDelete("_all").execute().actionGet();
        runner.refresh();
        suggester = Suggester.builder().build(runner.client(), "DefaultContentsParserTest");
        suggester.createIndexIfNothing();
    }

    @Test
    public void test_parseQueryLog() throws Exception {

        QueryLog queryLog = new QueryLog("content:検索エンジン", null);

                        .pluginTypes("org.codelibs.opensearch.extension.ExtensionPlugin"));
        runner.ensureYellow();
        suggester = Suggester.builder().build(runner.client(), TEST_ID);
        suggester.createIndexIfNothing();
    }

    @AfterClass
    public static void afterClass() throws Exception {
        runner.close();
        runner.clean();
    }

    @Before
    public void before() throws Exception {

                        .pluginTypes("org.codelibs.opensearch.extension.ExtensionPlugin"));
        runner.ensureYellow();
        suggester = Suggester.builder().build(runner.client(), TEST_ID);
        suggester.createIndexIfNothing();
        writer = new SuggestIndexWriter();
    }

    @AfterClass
    public static void afterClass() throws Exception {
        runner.close();
        runner.clean();
    }

    @Before

        runner.ensureYellow();
        suggester = Suggester.builder().build(runner.client(), "SuggesterTest");
        suggester.createIndexIfNothing();
    }

    @AfterClass
    public static void afterClass() throws Exception {
        runner.close();
        runner.clean();
    }

    @Before
    public void before() throws Exception {

        runner.close();
        runner.clean();
    }

    @Before
    public void before() throws Exception {
        suggester = Suggester.builder().build(runner.client(), getTestId());
        suggester.createIndexIfNothing();
    }

    private String getTestId() {
        return ("suggest-indexer-test-" + testName.getMethodName()).toLowerCase(Locale.ROOT);
    }

    @Test