class Generator {

    static List<String> generateRandomIds(int size) {
        List<String> ids = new ArrayList<>();
        for (int i = 0; i < size; i++) {
            ids.add(Utils.randomUUID());
        }

        return ids;
    }

    static List<String> generateEmptyScalars(int size) {
        String[] arr = new String[size];
        Arrays.fill(arr, "");

        return Arrays.asList(arr);
    }

    static List<JSONObject> generateEmptyJsons(int size) {<FILL_FUNCTION_BODY>}
}

        List<JSONObject> list = new ArrayList<>();
        for (int i = 0; i < size; i++) {
            list.add(new JSONObject(new HashMap<>()));
        }
        return list;
    
<no_super_class>