public @NotNull List<String> getMergeIds() {
    List<ID> linkIds = mergeData.linkIds;
    List<String> ids = new ArrayList<>(linkIds.size());
    for (ID linkId : linkIds) {
      ids.add(linkId.notificationId);
    }
    ids.add(id);
    return ids;
  }
public @NotNull List<String> getMergeIds()