Function not found in ITK module

[nkrah]

I am getting:
module 'itk' has no attribute 'ChangeInformationImageFilter'
when trying to run test015_iec_phantom_1.py.

I do not seem to be the first one with this issue in ITK:
https://discourse.itk.org/t/changeinformationimagefilter-missing-from-pip-installed-itk-5-3rc4post3/5375

In short:

1. Uninstall ITK
2. Manually remove all traces of ITK from your python environment
3. re-install ITK

For me, this was:

pip uninstall itk
rm -r /Users/nkrah/.virtualenvs/opengate/lib/python3.9/site-packages/itk*
pip install --upgrade --pre itk

Maybe that helps others.
@tbaudier : Is that an issue normal users (i.e., those who install opengate via pip) might encounter? If so, any way to catch that error or make the user aware?

[nkrah]

documented in developer guide