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

 *   <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>

                } 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.
     *

        } catch (Exception e) {
            // ignore
        }
        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);

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

    @Test
    public void test_writeItems() throws Exception {
        String[][] readings = new String[1][];
        readings[0] = new String[] { "test" };

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

    @Test
    public void test_indexSingleItem() throws Exception {
        String[][] readings = new String[1][];
        readings[0] = new String[] { "test" };

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

    @Test
    public void test_indexAndSuggest() throws Exception {
        SuggestItem[] items = getItemSet1();
        suggester.indexer().index(items);
        suggester.refresh();