TopoDS_Edge anEdge = BRepBuilderAPI_MakeEdge( aBSpline.Curve() ).Edge();
TopoDS_Wire aWire = BRepBuilderAPI_MakeWire( anEdge ).Wire();
TopoDS_Edge anEdge = BRepBuilderAPI_MakeEdge( aBSpline.Curve() ).Edge();
TopoDS_Wire aWire = BRepBuilderAPI_MakeWire( anEdge ).Wire();