docs: def _CheckPacketSize(cursor):
    """Checks that MySQL packet size is big enough for expected query size."""
    cur_packet_size = int(_ReadVariable("max_allowed_packet", cursor))
    if cur_packet_size < MAX_PACKET_SIZE:
      raise Error(
          "MySQL max_allowed_packet of {0} is required, got {1}. "
          "Please set max_allowed_packet={0} in your MySQL config.".format(
              MAX_PACKET_SIZE, cur_packet_size))