inputMap.put("key3", "value3");
        assertFalse(testParams.containsKey("key3"));
    }

    // Test protected constructor with ParamMap
    @Test
    public void test_protectedConstructorWithParamMap() {
        Map<String, Object> innerMap = new HashMap<>();
        innerMap.put("key1", "value1");
        ParamMap<String, Object> paramMap = new ParamMap<>(innerMap);