docs: def CountFlowResults(self, client_id, flow_id, with_tag=None, with_type=None):
      """Counts flow results of a given flow using given query options."""
      return len(
          self.ReadFlowResults(
              client_id,
              flow_id,
              0,
              sys.maxsize,
              with_tag=with_tag,
              with_type=with_type))