The current workset id found by the iterator. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2012 
Syntax
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Return Value
The workset id.Exceptions
| Exception | Condition | 
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| Autodesk.Revit.Exceptions InvalidOperationException | There are no more workset ids in the iterator. -or- The FilteredWorksetCollector that yielded this iterator has been reset by another operation. No further iteration is permitted with this iterator. |