code: func (q *MoreLikeThisQuery) Ids(ids ...string) *MoreLikeThisQuery {
  	for _, id := range ids {
  		item := NewMoreLikeThisQueryItem().Id(id)
  		q.docs = append(q.docs, item)
  	}
  	return q
  }
docs: // Ids sets the document ids to use in order to find documents that are "like" this.