final Settings settings = response.getIndexToSettings().get(analyzerSettingsIndexName);
        final Settings analyzerSettings = settings.getAsSettings("index.analysis.analyzer");
        return analyzerSettings.getAsGroups().keySet();
    }

    protected Map<String, FieldAnalyzerMapping> getFieldAnalyzerMapping() {
        final Map<String, FieldAnalyzerMapping> mappingMap = new HashMap<>();