code: def fetch(self):
          
          from neobolt.exceptions import ConnectionExpired
          if self._connection:
              try:
                  detail_count, _ = self._connection.fetch()
              except ConnectionExpired as error:
                  raise SessionExpired(*error.args)
              else:
                  return detail_count
          return 0
docs: Attempt to fetch at least one more record.
  
          :returns: number of records fetched