An object that manages default visibility of worksets in a document. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2012 
Syntax
Remarks
 WorksetDefaultVisibilitySettings does not exist for family documents. In case worksharing is disabled in a document, all elements are moved into a single workset; that workset, and any worksets (re)created if worksharing is re-enabled, is visible by default regardless of any current settings.