Microsoft Teams: "Connect Notification Channel" through API

Hello,

for our PagerDuty Services to post messages/Adaptive Cards to MS Teams Channels we connect each service to a specific Microsoft Teams Channel, until now manually via the PagerDuty Webinterface > Integrations > Microsoft Teams Integration > Connect Notification Channel.

I would like to get this done through API.

The API Documentation describes creating an “extension” (which MS Teams is listed as), but this does not seem to include the Channel connection. How can I connect a certain PagerDuty Service with an MS Teams channel?

As this is the last step of a crucial PD service onboarding, it would be unfortunate if we had to do this manually, just to have a semi-automated process in the end.

Thanks and regards
Daniel