@BeforeEach
    void before() {
        // serde is kept for the life of the test
        serde = null;
    }
Make sure T implements equals as {@link AbstractSerdeTest#doSerialisationDeserialisationTest(Object)} will do an
equality check. If your serde doesn't have a no-args constructor then implement
{@link AbstractSerdeTest#getSerdeSupplier()}.

@param <T> The type of the object being (de-)serialised.
@param <S> The type of the serde.
stroom-lmdb/src/test/java/stroom/lmdb/serde/AbstractSerdeTest.java