Choose whether this connection type applies to beams and braces, to tops of columns, or to bases of columns. 
   Namespace:   Autodesk.Revit.DB.Structure  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2011 
Syntax
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Remarks
 The property cannot be changed. Create a new StructuralConnectionType if a different value is needed.