@Test
public void test() throws Exception {

  getReviews().forEach(r -> assertThat(r.getTitle(), is(not("FooBar"))));
  getReviews()
      .map(r -> ReviewBuilders.reviewUpdater(r)
          .title("FooBar")
          .done())
      .forEach(reviewRepository::save);
  getReviews().forEach(r -> assertThat(r.getTitle(), is("FooBar")));
}