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