code: public int compareTo(ViewId other) {
          return id > other.id ? 1 : id < other.id ? -1 : creator.compareTo(other.creator);
      }
docs: Establishes an order between 2 ViewIds. The comparison is done on the IDs, if they are equal, we use the creator.
  
  @return 0 for equality, value less than 0 if smaller, greater than 0 if greater.