I've been trying for a couple of days to create a custom cell for MyConcept which extends BaseConcept.
I have a custom MyCellProvider, extending the AbstractCellProvider. I also have a custom cell in my editor and the Inspector displays a method of type: (editorContext, node)->AbstractCellProvider.
Now I assume I would have to return something like this: return new MyCellProvider(node).
But I get the error "type node<MyConcept> is not a subtype of jetbrains.mps.smodel.SNode".
So how do I tell a custom cell to use my cell provider?