BRep | 
| Exception | Condition | 
|---|---|
| ArgumentException | The supplied face id doesn't correspond to a face stored in this BRepBuilder object. -or- FinishFace() has already been called on faceId. -or- The face has no edge loops. -or- FinishLoop() must be called on all the edge loops of faceId. | 
| ArgumentNullException | A non-optional argument was null |