Any example of the new 2019.1 XR input system?

I'm so excited to see there is a new XR input mapping system in 2019.1: https://docs.unity3d.com/2019.1/Documentation/Manual/xr_input.html

But haven't been able to find any code example showing how to use it.

Does anyone know how to do something as simple as say spawning a cube in the position of the controller when the trigger is pressed?

Any help would be much appreciated!!