Builds upon !63457 (merged).
This MR updates the GenParticleSimWhiteList
IGenParticleFilter
tool to deal with the case that the GenParticle
and GenVertex
objects associated with decays of quasi-stable particles predefined by the generator may not be present in the output GenEvent
. This is ability is switched off by default, so no change in output is expected.
Part of the changes from !63059 (merged).