code: def search(self, query_string):
          
          query = self.create_query()
          # TODO: should QueryParser be a method of query? should it return one?
          parser = QueryParser(query_string, query)
          parser.parse()
          return self.query(query)
docs: Performs a search against the index using lunr query syntax.
  
          Results will be returned sorted by their score, the most relevant
          results will be returned first.
  
          For more programmatic querying use `lunr.Index.query`.
  
          Args:
              query_string (str): A string to parse into a Query.
  
          Returns:
              dict: Results of executing the query.