michael-jeulinl/MSVTK — comment on commit 7198a2816f51ec83f4c2cdf96230febe87b3f15a
File: Libs/VTK/Parallel/Testing/Cpp/msvVTKFileSeriesReaderTest1.cxx line 172
By finetjul:

this is too low level
you shouldn't have to do that if you want an instance of a vtkDataObject for all output ports.