Migration of TruthParticleID to HepMC3
In this MR:
Migration of TruthParticleID to HepMC3.
Note that some parts of test are meaningless in HepMC3, e.g.
HepMC2 requires alphaQCD
to be set, even if the value is not reasonable (-1), but for HepMC3 the existence of alphaQCD
is optional.
Edited by Andrii Verbytskyi