correct ParticleGun common fragments to work in 21.6 (!45376) · Merge requests · atlas / athena · GitLab

Ewelina Maria Lobodzinska requested to merge ewelina/athena:21.6-com into 21.6 Jul 22, 2021

correct ParticleGun common fragments to work in 21.6

It is needed for https://its.cern.ch/jira/browse/AGENE-1885