The system of the MEP curve.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 19.0.0.0 (19.0.0.405)
Syntax
Remarks
Returns the system of this MEP curve. If the curve does not belong to any systems, the value will be a null reference ( Nothing in Visual Basic) . If the curve belongs to more than one system, the first available value is returned.