How to get the reference face of a Face based family

Hello dear professional.
I can not find the way how to get the reference face of a face based element in Revit that is hosted on a wall face.
There are a lot of nodes that can get the host element (wall revit element) of a face based elements. For example, you have a switcher on the wall. The switcher family is a face based element. I want to get the reference face of this family as a surface in dynamo. I don’t need the wall element, I need a surface.
Could you please advise me how can I do it

The OOTB node “Select Points on Face”