A Corner Mullion has been placed at the end of a Curtain Wall that is not joined to another Curtain Wall. The angle of the Corner Mullion will default to 90 degrees. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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