@Override
 public Set<Response> match(Set<Response> responses) {
   Set<Response> match = new HashSet<Response>();
   for (Response response : responses) {
     if (isMatchedDateId(response.getOptionId())) {
       match.add(response);
     }
   }
   return match;
 }
  private Set<Response> theResponses(final ScheduleEvent event) {
    Set<Response> responses = new HashSet<Response>(2);
    Response response = new Response();
    response.setId("ff808081369cf58901369cf8b45d0006");
    response.setOptionId("ff808081369cf58901369cf88a3d0001");
    response.setUserId(0);
    response.setScheduleEvent(event);
    responses.add(response);

    response = new Response();
    response.setId("ff808081369cf58901369cf90b410009");
    response.setOptionId("ff808081369cf58901369cf88a3d0001");
    response.setUserId(2);
    response.setScheduleEvent(event);
    responses.add(response);

    return responses;
  }