Returns the profile with generated fillets that defines the shape of the Fabric Sheet bending. 
   Namespace:   Autodesk.Revit.DB.Structure  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 16.0.0.0 (16.0.0.0) 
  Since:  2016 
Syntax
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Return Value
The bend profile with generated fillets that defines the shape of the fabric fheet bending for bent fabric sheet, for flat fabric sheet a null reference ( Nothing in Visual Basic) will be returned.Remarks
 Returned curve loop is created automatically as a result of adding fillets to bend profile. The returned profile defines the center-curve of a wire. Note that bent Fabric Sheets can have planar geometry, but flat Fabric Sheets are always planar.