public JSONOutput(Map<String, Object> outputMap) {
        super(outputMap);

        if (outputMap.isEmpty()) {
            responseJson.put("response", new JSONArray());
        }

        else if(outputMap.size() == 1) {
            //obj - first element of LinkedHashMap
            if (obj instanceof ResultImpl) {
                responseJson.put("response", getJson((ResultImpl) obj));
            } else {
                responseJson.put("response", obj);
            }
        }
        else {
            for (Map.Entry<String, Object> entry : outputMap.entrySet()) {
                Object obj = entry.getValue();

                if (obj instanceof ResultImpl) {
                    responseJson.append("response", getJson((ResultImpl) obj));
                } else {
                    responseJson.append("response", obj);
                }
            }
        }
 }