Updated code

src/Cxx/Matlab/MatlabEngineFilter.cxx

 //need to set VTK_USE_MATLAB_MEX ON
 
-#include <vtkSmartPointer.h>
+#include <vtkNew.h>
 #include <vtkMatlabEngineFilter.h>
 
 int main(int argc, char *argv[])
 {
-  vtkSmartPointer<vtkMatlabEngineFilter> matlabFilter = 
-      vtkSmartPointer<vtkMatlabEngineFilter>::New();
+  vtkNew<vtkMatlabEngineFilter> matlabFilter;
 
   return EXIT_SUCCESS;
 }

src/Cxx/Matlab/MatlabEngineFilter.md

 ### Description
-This example currently does nothing. 
+
+This example currently does nothing.