/** * Returns a JSON representation of the object. This method is the counterpart to the * PropertyGroup(String) constructor. * * @return a JSON object */ @Override public JSONObject toJson() { JSONObject json = super.toJson(); List<JSONValue> jsonProperties = new ArrayList<JSONValue>(); for (JSONMetaDataObject property : properties) { jsonProperties.add(property.toJson()); } json.put(PROPERTIES, JsonUtil.buildArray(jsonProperties)); return json; }