assertEquals("existingValue", dataStoreParams.getAsString("existingKey", "defaultValue"));

        assertNull(dataStoreParams.getAsString("nonExistentKey"));
        assertEquals("defaultValue", dataStoreParams.getAsString("nonExistentKey", "defaultValue"));

        dataStoreParams.put("nullKey", null);
        assertEquals("defaultValue", dataStoreParams.getAsString("nullKey", "defaultValue"));
    }

    }

    public void test_getObject_nonExistentKey() {
        // Test getObject with non-existent key
        Object result = WebApiUtil.getObject("nonExistentKey");
        assertNull("getObject should return null for non-existent key", result);
    }

    public void test_setError_withMessage_noRequest() {
        // Test setError with message when no HTTP request is available