This MR adds the truthOrigin and truthType variables for ID tracks in smart slimming. We have observed some discrepancies between these variables and the corresponding ones obtained from reconstructed muon objects. By keeping the information for both muon objects and ID tracks, we can develop recommendations that allow users seamless access to the "best" available information for any given category of muon.
Since this information is at the moment intended for muon-related use, the variables have been added in the smart slimming list for muons. If preferred, they could be moved to the corresponding list for ID, InDetTrackParticlesCPContent.py.