Sweeping !57098 from master to 22.0. Pythia8_i: improve encapsulation of pythia_stream (!57174) · Merge requests · atlas / athena · GitLab

Atlas Nightlybuild requested to merge cherry-pick-f8404ac6f92-22.0 into 22.0 Sep 30, 2022

Pythia8_i: improve encapsulation of pythia_stream

See merge request !57098 (merged)