// Verify that returned map is a copy
        map.put("key4", "value4");
        assertFalse(dataStoreParams.containsKey("key4"));
    }

    // Test asMap with empty params
    public void test_asMapEmpty() {
        Map<String, Object> map = dataStoreParams.asMap();
        assertNotNull(map);
        assertTrue(map.isEmpty());
    }

    // Test getDataMap with ParamMap