The id of the MultistoryStairs element to which this element belongs.
If this stairs element is not a member of a MultistoryStairs element, this will be InvalidElementId.
Namespace:
Autodesk.Revit.DB.Architecture
Assembly:
RevitAPI
(in RevitAPI.dll) Version: 18.0.0.0 (18.0.0.420)
Since:
2013