}

    public boolean createIndexIfNothing() {
        try {
            boolean created = false;
            final IndicesExistsResponse response =
                    client.admin().indices().prepareExists(getSearchAlias(index)).execute().actionGet(suggestSettings.getIndicesTimeout());
            if (!response.isExists()) {
                final String mappingSource = getDefaultMappings();

            final boolean expandWildcardsClosed) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        try {
            final IndicesExistsResponse response = indicesClient.prepareExists(index).setExpandWildcardsClosed(expandWildcardsClosed)
                    .setExpandWildcardsOpen(expandWildcardsOpen).execute().actionGet(fessConfig.getIndexSearchTimeout());
            return response.isExists();

    }

    public synchronized void init() {
        try {
            final IndicesExistsResponse response =
                    client.admin().indices().prepareExists(analyzerSettingsIndexName).execute().actionGet(settings.getIndicesTimeout());
            if (!response.isExists()) {
                createAnalyzerSettings(loadIndexSettings(), loadIndexMapping());
            }

    }

    protected void createMapping(final String mappingName) {
        boolean exists = false;
        try {
            final IndicesExistsResponse response = fesenClient.get(c -> c.admin().indices().prepareExists(index).execute());
            exists = response.isExists();
        } catch (final IndexNotFoundException e) {
            // ignore
        }
        if (!exists) {

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        boolean exists = false;
        try {
            final IndicesExistsResponse response =
                    client.admin().indices().prepareExists(indexName).execute().actionGet(fessConfig.getIndexSearchTimeout());
            exists = response.isExists();
        } catch (final Exception e) {
            logger.debug("Failed to check {} index status.", indexName, e);