code: public boolean overrides(Link other) {
      if (other.getStatus() == LinkStatus.ASSERTED &&
          status != LinkStatus.ASSERTED)
        return false;
      else if (status == LinkStatus.ASSERTED &&
               other.getStatus() != LinkStatus.ASSERTED)
        return true;
  
      // the two links are from equivalent sources of information, so we
      // believe the most recent
  
      return timestamp > other.getTimestamp();
    }
docs: Returns true if the information in this link should take
  precedence over the information in the other link.