}

        infoMap = null;
    }

    public synchronized void putToInfoMap(final String key, final String value) {
        if (infoMap == null) {
            infoMap = Collections.synchronizedMap(new LinkedHashMap<>());
        }
        logger.debug("infoMap: {}={} => {}", key, value, infoMap);
        infoMap.put(key, value);
    }