code: func NewMoreLikeThisQuery() *MoreLikeThisQuery {
  	return &MoreLikeThisQuery{
  		fields:     make([]string, 0),
  		stopWords:  make([]string, 0),
  		docs:       make([]*MoreLikeThisQueryItem, 0),
  		unlikeDocs: make([]*MoreLikeThisQueryItem, 0),
  	}
  }
docs: // NewMoreLikeThisQuery creates and initializes a new MoreLikeThisQuery.