public void OnCheckpointCommand(long seqNum, long timeStamp)
{
logger.Info($"OnCheckpointCommand() seqNum: {seqNum}, timestamp: {timeStamp}, Now: {FrameApianTime}");
CoreData.UpdateCommandSequenceNumber(seqNum);
string stateJson = CoreData.ApianSerialized(new BeamCoreState.SerialArgs(seqNum, FrameApianTime, timeStamp));
logger.Debug($"**** Checkpoint:\n{stateJson}\n************\n");
apian.SendCheckpointState(FrameApianTime, seqNum, stateJson);
// BeamGameState newState = BeamGameState.FromApianSerialized(GameData, seqNum, timeStamp, "blahblah", stateJson);
}
