XINDICE COLLECTION UPDATE NOTIFICATIONS

[Chance, Sam USA]

Hi!   Can someone tell me how I can programmatically determine when a Xindice collection has been updated.  For example, I want to “listen” for new documents being posted to a Xindice collection and automatically respond the the changes.  Is there a class/method within the xindice API (or other APIs) that will allow me to receive notification?    Thank you! Sam