Apply a parsed document to a UGM (property kinds) or convert it (overlay kind belongs to the overlay registry, not the UGM: structure-shaped results never mutate the graph). Returns the overlay when the document is structural, undefined otherwise.
Apply a parsed document to a UGM (property kinds) or convert it (overlay kind belongs to the overlay registry, not the UGM: structure-shaped results never mutate the graph). Returns the overlay when the document is structural, undefined otherwise.