docs: def WriteClientGraphSeries(
        self,
        graph_series,
        client_label,
        timestamp,
        cursor=None,
    ):
      """Writes the provided graphs to the DB with the given client label."""
      args = {
          "client_label": client_label,
          "report_type": graph_series.report_type.SerializeToDataStore(),
          "timestamp": mysql_utils.RDFDatetimeToTimestamp(timestamp),
          "graph_series": graph_series.SerializeToString(),
      }
  
      query = """
        INSERT INTO client_report_graphs (client_label, report_type, timestamp,
                                          graph_series)
        VALUES (%(client_label)s, %(report_type)s, FROM_UNIXTIME(%(timestamp)s),
                %(graph_series)s)
        ON DUPLICATE KEY UPDATE graph_series = VALUES(graph_series)
      """
  
      cursor.execute(query, args)