That’s a great question! Before 2025.1 with all the new nodes dropped, you could do something like this, using nodes from the Civil3d Toolkit. This would list all directly available parameters.
As of now, the Civil3d Toolkit hasn’t updated and I’m not sure it will because I don’t think Autodesk will supply two different packages? Here’s a post descriping the status quo.
I hope a dedicated node will be incorperated in the future, until then you might have to use python as @geert.drijfhout provided.