WatchOS Background Refresh API

I have been struggling for weeks to make the new WatchOS Background Refresh API work within my application. I have reviewed the Watch OS video courses and the WatchOS Tutorials to no avail. I have also made a thorough review of online resources but have been unable to find any examples of an app working as Apple demonstrated during WWDC 2016. This includes their very own sample app, WatchBackgroundRrefresh, which fails to perform its stated task on either the simulator or the device.

Would you please consider adding a WatchOS tutorial demonstrating working code for WKRefreshBackgroundTask and WKURLSessionRefreshBackgroundTask?

Specifically, firing a WKRefreshBackgroundTask to begin a URLSession Background task in order to update a model and its associated complication.

Thank you,