ex1.setSid(5);
ex1.setValue(50);
in.add(ex1);
assertThat(tester.runFlow(new SummarizeFlowRenameKey(
in.flow(), summarized.flow())), is(true));
List<ExSummarized2> results = summarized.toList(new Comparator<ExSummarized2>() {
@Override
public int compare(ExSummarized2 o1, ExSummarized2 o2) {