for (Map<String, Object> setting : settings) {
            final Map<String, Object> requestBody = new HashMap<>(updateMap);
            requestBody.put("version_no", 1);
            final String idKey = getIdKey();
            if (setting.containsKey(idKey)) {
                requestBody.put(idKey, setting.get(idKey));
            }
            for (String key : keySet) {

        final Map<String, Object> source = toLowerHyphen(searchLogEvent.toSource());
        source.put("_id", searchLogEvent.getId());
        // source.put("version_no", searchLogEvent.getVersionNo());
        source.put("event_type", searchLogEvent.getEventType());
        return source;
    }

    /**
     * Converts a map to lower hyphen case.
     *