You're going to have to script the rhino command in v4 if you have to unroll there (probably adding and deleting temporary objects). It's not available in Rhino common for grasshopper/v4 as it's not exposed to the…"
The Geometry Gym plugins also use Rhino Common in v4 (but then require that Grasshopper is installed, not necessarily active). It uses a similar strategy to Grasshopper to load rhino common if it is not already. Note for…"