code: @Override
    public int compareTo(StatusRepresentation o) {
      Long mine = getStatusId();
      Long other = o.getStatusId();
      return mine != null ? (other != null ? mine.compareTo(other) : 1)
          : (mine == other ? 0 : -1);
    }
docs: /*
  Sorts statuses according to status ID by default.
  
  @see java.lang.Comparable#compareTo(java.lang.Object)