code: def params(self, **kwargs):
          
          s = self._clone()
          s._params.update(kwargs)
          return s
docs: Specify query params to be used when executing the search. All the
          keyword arguments will override the current values. See
          https://elasticsearch-py.readthedocs.io/en/master/api.html#elasticsearch.Elasticsearch.search
          for all available parameters.
  
          Example::
  
              s = Search()
              s = s.params(routing='user-1', preference='local')