code: func normalizeTriggeredJobIDs(projectID string, t *messages.Trigger) []string {
  	set := stringset.New(len(t.Triggers))
  	for _, j := range t.Triggers {
  		set.Add(projectID + "/" + j)
  	}
  	out := set.ToSlice()
  	sort.Strings(out)
  	return out
  }
docs: // normalizeTriggeredJobIDs returns sorted list without duplicates.