private static @NotNull List<String> collectUsers(@NotNull VcsLogData logData) {
    List<String> users = ContainerUtil.map(logData.getAllUsers(), user -> {
      String shortPresentation = VcsUserUtil.getShortPresentation(user);
      Couple<String> firstAndLastName = VcsUserUtil.getFirstAndLastName(shortPresentation);
      if (firstAndLastName == null) return shortPresentation;
      return VcsUserUtil.capitalizeName(firstAndLastName.first) + " " + VcsUserUtil.capitalizeName(firstAndLastName.second);
    });
    TreeSet<String> sortedUniqueUsers = new TreeSet<>(users);
    return new ArrayList<>(sortedUniqueUsers);
  }
private static @NotNull List<String> collectUsers(@NotNull VcsLogData logData)