code: func (br byRevision) Less(i, j int) bool {
  	if br[i].Revision == br[j].Revision {
  		if br[j].CreationTimestamp.Equal(&br[i].CreationTimestamp) {
  			return br[i].Name < br[j].Name
  		}
  		return br[j].CreationTimestamp.After(br[i].CreationTimestamp.Time)
  	}
  	return br[i].Revision < br[j].Revision
  }
docs: // Less breaks ties first by creation timestamp, then by name