AcRxObject AcDbAssocPersSubentId AcDbAssocSingleEdgePersSubentId
class AcDbAssocSingleEdgePersSubentId : public AcDbAssocPersSubentId;
AcDbAssocSingleEdgePersSubentId.h
The concrete derived AcDbAssocPersSubentId class that identifies an edge subentity if the entity has only a single edge subentity (such as in the case for curve entities).