public WriteResult<T, K> update(Bson filter, T object, boolean upsert, boolean multi) {
        return update(filter, object, upsert, multi, delegate.getWriteConcern());
    }
@Test
    void wasAcknowledged() {
        final var collection = jacksonCollection("simple", Simple.class);
        final var foo = new Simple(null, "foo");

        assertThat(collection.update(DBQuery.empty(), foo, false, false, WriteConcern.UNACKNOWLEDGED)
                .wasAcknowledged()).isFalse();
        assertThat(collection.update(DBQuery.empty(), foo, false, false, WriteConcern.ACKNOWLEDGED)
                .wasAcknowledged()).isTrue();
    }