Automatic log off clients (Spark) connected to Openfire Server after a specified amount of idel time

First of all, I wanted to THANK YOU for all your hard work and dedication for continusely fixing bugs and adding more features and security of this invaluable product.

I was wondering if you all can add a feature: Automatic log off clients (Spark) connected to Openfire Server after a specified amount of idel time?

Thanks again.