RegionWidget regionWidget = new JpaRegionWidget(1L);
region.getRegionWidgets().add(regionWidget);
System.out.println(region.toString());
Region saved = repository.save(region);
manager.flush();
System.out.println(saved.toString());
assertThat(saved.getRegionWidgets().size(), is(equalTo(1)));
RegionWidget actual = saved.getRegionWidgets().get(0);
assertThat(actual, is(not(sameInstance(regionWidget))));
assertThat(actual.getId(), is(equalTo("1")));
}