I saw in the link below that there isn't a way to query whether or not the queued calculations have been completed with the QueueCalculation method. The reason being: "This method queues the list of analyses on the analysis service to be calculated. The operation is asynchronous and returning of the method does not indicate that queued analyses were calculated. The status can be queried in the upcoming releases using the returned handle."
However, in PI System Explorer we can backfill the analysis and then monitor the its status (including when it was completed). Does the PI AF SDK have a method which returns all analysis that are backfilling, or even a method which returns when the backfill of an especific analysis has been completed?