public virtual OperatorSnapshotFutures SnapshotState(long checkpointId, long timestamp, CheckpointOptions checkpointOptions,
ICheckpointStreamFactory storageLocation)
{
throw new NotImplementedException();
}
public TaskCompletionSource <SnapshotResult <IOperatorStateHandle> > Snapshot(long checkpointId, long timestamp, ICheckpointStreamFactory streamFactory,
CheckpointOptions checkpointOptions)
{
throw new System.NotImplementedException();
}
