code: func (mi *MetaInfo) UpvertedAnnounceList() AnnounceList {
  	if mi.AnnounceList.OverridesAnnounce(mi.Announce) {
  		return mi.AnnounceList
  	}
  	if mi.Announce != "" {
  		return [][]string{[]string{mi.Announce}}
  	}
  	return nil
  }
docs: // Returns the announce list converted from the old single announce field if
  // necessary.