GET EXDATEs for RRULEs

As a developer, I would like to be able to get the EXDATEs for recurring events via the Graph API. Currently, I can get the full list of all occurrences of an event, but there is no way to see which ones have been deleted. I would like to be able to store the master event and RRULE locally, and then use the RRULE to expand the full list within my application. I need to know which occurrences to omit though. This would allow me to avoid storing the entire list of occurrences, which can be unwieldy if the event repeats forever.