final Settings settings) {
        super(indexSettings, name, settings);

        final String path = settings.get("keywords_path");
        if (path != null) {
            keywordPath = environment.configDir().resolve(path);
        } else {
            keywordPath = null;
        }

        reloadInterval = settings.getAsTime("reload_interval", TimeValue.timeValueMinutes(1)).getMillis();
    }

    @Override

            final Settings settings) {
        super(indexSettings, name, settings);

        final String path = settings.get("stopwords_path");
        if (path != null) {
            stopwordPath = environment.configDir().resolve(path);
        } else {
            stopwordPath = null;
        }

        ignoreCase = settings.getAsBoolean("ignore_case", false);

        super(indexSettings, name, settings);

        final String suffixWordsPath = settings.get("suffix_words_path");

        if (suffixWordsPath != null) {
            final File suffixWordsFile = environment.configDir().resolve(suffixWordsPath).toFile();
            try (Reader reader = IOUtils.getDecodingReader(new FileInputStream(suffixWordsFile), StandardCharsets.UTF_8)) {
                suffixWords = WordlistLoader.getWordSet(reader);

        }
        return deferred.promise();
    }

    /**
     * Processes the request.
     * @param client The OpenSearch client.
     * @param deferred The Deferred object to resolve or reject the response.
     */
    protected abstract void processRequest(Client client, Deferred<T> deferred);

    /**
     * Returns a validation error message, or null if there are no errors.

 *   <li>{@link #switchIndex()}: Switches the search alias to the current update index.</li>
 *   <li>{@link #removeDisableIndices()}: Removes disabled indices.</li>
 *   <li>{@link #indexer()}: Creates a new SuggestIndexer for indexing suggestions.</li>
 *   <li>{@link #builder()}: Creates a new SuggesterBuilder for building Suggester instances.</li>

    public static final String SMB_OWNER_ATTRIBUTES = "smbOwnerAttributes";

    /** Character set used for encoding SMB content. */
    protected String charset = Constants.UTF_8;

    /** Flag indicating whether to resolve SIDs to names. */
    protected boolean resolveSids = true;

    /** Helper for content length operations. */
    @Resource
    protected ContentLengthHelper contentLengthHelper;

    /**

                    deferred.reject(new SuggesterException("Search failure. Failed shards num:" + searchResponse.getFailedShards()));
                } else {
                    deferred.resolve(createResponse(searchResponse));
                }
            }

            @Override
            public void onFailure(final Exception e) {
                deferred.reject(e);
            }
        });

        assertNotNull(invalidKeywords);
        assertEquals(0, invalidKeywords.size());
    }

    @Test
    public void testGetKeywordsWithDuplicates() {
        // Test that duplicates are removed
        String query = "test test query";
        String[] fields = { "content" };
        List<String> keywords = SuggestUtil.getKeywords(query, fields);
        assertNotNull(keywords);

				"application/prs.cww",
				"application/prs.nprend",
				"application/prs.plucker",
				"application/qsig",
				"application/reginfo+xml",
				"application/relax-ng-compact-syntax",
				"application/remote-printing",
				"application/resource-lists+xml",
				"application/resource-lists-diff+xml",
				"application/riscos",
				"application/rlmi+xml",
				"application/rls-services+xml",
				"application/rsd+xml",

                        queryLogs.clear();

                        Thread.sleep(requestInterval);
                    }
                }
                deferred.resolve(
                        new SuggestIndexResponse(numberOfSuggestDocs, numberOfInputDocs, errors, System.currentTimeMillis() - start));
            } catch (final Throwable t) {
                deferred.reject(t);