code: func (idx *Index) Options(row *PQLRowQuery, opts ...OptionsOption) *PQLBaseQuery {
  	oo := &OptionsOptions{}
  	for _, opt := range opts {
  		opt(oo)
  	}
  	text := fmt.Sprintf("Options(%s,%s)", row.serialize(), oo.marshal())
  	return NewPQLBaseQuery(text, idx, nil)
  }
docs: // Options creates an Options query.