2 from Configuration.Eras.Modifier_fastSim_cff
import fastSim
3 fastSim.toModify(trackingParticleNumberOfLayersProducer, simHits=[
'fastSimProducer:TrackerHits'])
4 from Configuration.Eras.Modifier_phase2_tracker_cff
import phase2_tracker
5 phase2_tracker.toModify(trackingParticleNumberOfLayersProducer, simHits = [
"g4SimHits:TrackerHitsPixelBarrelLowTof",
"g4SimHits:TrackerHitsPixelEndcapLowTof"])
7 from Configuration.ProcessModifiers.premix_stage2_cff
import premix_stage2
8 premix_stage2.toModify(trackingParticleNumberOfLayersProducer, trackingParticles =
"mixData:MergedTrackTruth")