/// <summary>
/// Set last id of given reward from a <c>SequenceReward</c>
/// </summary>
/// <param name="reward">to set last id for</param>
/// <param name="reward">the last id to to mark as given</param>
protected override void _setLastSeqIdxGiven(SequenceReward seqReward, int idx)
{
string rewardJson = seqReward.toJSONObject().ToString();
rewardStorage_SetLastSeqIdxGiven(rewardJson, idx);
}
/// <summary>
/// Get last id of given reward from a <c>SequenceReward</c>
/// </summary>
/// <param name="reward">to query</param>
/// <returns>last index of sequence reward given</returns>
protected override int _getLastSeqIdxGiven(SequenceReward seqReward)
{
string rewardJson = seqReward.toJSONObject().ToString();
return rewardStorage_GetLastSeqIdxGiven(rewardJson);
}