Controlling elgato Eve products

Hey folks, I’ve used the search function to no end but I always find ways to control openHAB using the Home-app on iPhone.
What I want to do is the other way around.
I have an elgato Eve Energy (wall-plug) and I want to control it using my already up-and-running openHAB 2 setup.
Is this possible at all?
Sorry if I’m asking a dumb question but I honestly could not find a solution on my own.

Starter thoughts

I was under the impression that this is used to control openHAB items with Siri.
The first post I also found but there is no solution yet.
Here is an older post nobody could answer which is basically my question: