docs: def get_paged_slice(self, column_family, range, start_column, consistency_level):
      """
      returns a range of columns, wrapping to the next rows if necessary to collect max_results.
  
      Parameters:
       - column_family
       - range
       - start_column
       - consistency_level
      """
      self._seqid += 1
      d = self._reqs[self._seqid] = defer.Deferred()
      self.send_get_paged_slice(column_family, range, start_column, consistency_level)
      return d