@NotNull
  private List<CommittedChangeList> mergeLocationGroupChangeLists(@NotNull RepositoryLocationGroup group) {
    List<CommittedChangeList> result = new ArrayList<>();
    List<CommittedChangeList> equalLists = new ArrayList<>();
    CommittedChangeList previousList = null;

    for (CommittedChangeList list : Iterables.mergeSorted(collectChangeLists(group.getLocations()), myComparator)) {
      if (previousList != null && myComparator.compare(previousList, list) != 0) {
        result.add(zip(group, equalLists));
        equalLists.clear();
      }
      equalLists.add(list);
      previousList = list;
    }
    if (!equalLists.isEmpty()) {
      result.add(zip(group, equalLists));
    }

    return result;
  }
@NotNull
  private List<CommittedChangeList> mergeLocationGroupChangeLists(@NotNull RepositoryLocationGroup group)