code: func (s *SelectionPredicate) MatchesSingle() (string, bool) {
  	if len(s.Continue) > 0 {
  		return "", false
  	}
  	// TODO: should be namespace.name
  	if name, ok := s.Field.RequiresExactMatch("metadata.name"); ok {
  		return name, true
  	}
  	return "", false
  }
docs: // MatchesSingle will return (name, true) if and only if s.Field matches on the object's
  // name.