josephsnyder/Slicer — comment on commit 3a6e1ccde5e17d1429271222204f9d7e6e5bff52
File: Modules/Loadable/TractographyDisplay/Logic/vtkSlicerFiberBundleLogic.h line 32
By finetjul:

please don't add includes that are not necessary in header file.
do instead:
class vtkMRMLFiberBundleNode;
...