public void test_mergeResponseData_multipleOverwrite() {
        Map<String, Object> dataMap = new HashMap<>();
        // Case where the initial dataMap also contains overwrite keys
        dataMap.put("m", "M0");
        dataMap.put("n.overwrite", "N0_old");

        Map<String, Object> responseDataMap = new HashMap<>();
        responseDataMap.put("m.overwrite", "M1");
        responseDataMap.put("n.overwrite", "N1");