private void checkKnownFields(TestMessageExtended instance)
    {
        Assert.assertEquals(fixtureExtended.field1, instance.field1);
        Assert.assertEquals(fixtureExtended.field2, instance.field2);
        Assert.assertTrue(Arrays.equals(fixtureExtended.field3, instance.field3));
    }
Test for ignoring unknown fields during de-seralization
protostuff-msgpack/src/test/java/io/protostuff/MsgpackUnknownFieldTest.java