Public Sub GetBendCenterLineAttributesEx( _
   ByRef BendAtributesExist As Boolean, _
   Optional ByRef BendCenterLineEndPoints As Variant, _
   Optional ByRef AttrbuteVersion As Variant, _
   Optional ByRef BendRadius As Variant, _
   Optional ByRef BendAngle As Variant, _
   Optional ByRef BendSweepAngle As Variant, _
   Optional ByRef BendOrientation As Variant _
)