@Test
  @Ignore(
      "this was written for a neo4j persistence engine, which treats null ids differently than Hibernate")
  /* code */ public void whenResourceIsRetrievedByNegativeId_then409IsReceived() {
    final Long id = IDUtil.randomNegativeLong();

    // When
    final Response res =
        getApi().findOneByUriAsResponse(getUri() + WebConstants.PATH_SEP + id, null);

    // Then
    assertThat(res.getStatusCode(), is(409));
  }