Change defining Parameter interface for NeutralParticle to be the same as…
Change defining Parameter interface for NeutralParticle to be the same as TrackParticle, cleaner and MT compatible.
i.e the static
and returning by reference are now automatic
and by value (like the trackParticle).
There is a case clients depend on this "feature" , hopefully this will not be the case i.e the CI will tell us
Edited by Christos Anastopoulos