+#if (VTK_MAJOR_VERSION <= 7)
+ void boxSurfaceObserver::SetvtkVolumeRayCastMapper(vtkVolumeRayCastMapper *vtkvolumeraycastmapper)
+#else
+ void boxSurfaceObserver::SetvtkFixedPointVolumeRayCastMapper(vtkFixedPointVolumeRayCastMapper *vtkvolumeraycastmapper)
+#endif