public Collection<Object> getFoundItems(SearchEverywhereContributor contributor) {
    return listElements.stream()
      .filter(info -> info.getContributor() == contributor &&
                      info.getElement() != MORE_ELEMENT &&
                      !(info.getElement() instanceof ResultsNotificationElement))
      .map(info -> info.getElement())
      .collect(Collectors.toList());
  }
public Collection<Object> getFoundItems(SearchEverywhereContributor contributor)