code: def search_bm25(cls, term, weights=None, with_score=False,
                      score_alias='score', explicit_ordering=False):
          
          return cls._search(
              term,
              weights,
              with_score,
              score_alias,
              cls.bm25,
              explicit_ordering)
docs: Full-text search for selected `term` using BM25 algorithm.