code: func SortByDate(list []*rspb.Release) {
  	s := &sorter{list: list}
  
  	s.less = func(i, j int) bool {
  		ti := s.list[i].Info.LastDeployed.Seconds
  		tj := s.list[j].Info.LastDeployed.Seconds
  		return ti < tj
  	}
  	sort.Sort(s)
  }
docs: // SortByDate returns the list of releases sorted by a
  // release's last deployed time (in seconds).