Property to get the super component of current family instance. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
Remarks
 When the FamilyInstance has no super component, it returns    a null reference (  Nothing  in Visual Basic)