Speech-To-Text for the SAP CAI Web Client using

So, there is a tutorial showing how to use IBM watson in order to use the SAP CAI STT feature. I tried to use the SpeechRecognition API, which is also given as a template in the corresponding git repo. However I cannot make it work on my own and it seems like the template is not ready to go, as there is still an open #todo stated.

Is there any other tutorial or did someone else make it work using the SpeechRecognition API?

If not, @sap, could you provide a tutorial for this, as my company would really like to make use of the STT feature in the SAP CAI Web Client.