Accessing oxygen sensor data in the Connect SDK for a Vivoactive 4?

In the connect SDK, in the Sensor class (or any class for that matter), I cannot find any way to access o2 or oxygen saturation data. I would like to create an app that calls the Toybox.Attention routines to vibrate if my oxygen saturation reaches a certain threshold. Is this not possible using the Connect SDK with a Vivoactive 4?