assertEquals("Field naming should be CAMEL_TO_LOWER_SNAKE", JsonFieldNaming.CAMEL_TO_LOWER_SNAKE, fieldNamingOpt.get());
    }

    public void test_instanceCreation() {
        // Test that multiple instances can be created independently
        FessJsonResourceProvider provider1 = new FessJsonResourceProvider();
        FessJsonResourceProvider provider2 = new FessJsonResourceProvider();