cms.EDProducer("TrackAssociatorEDProducer",\ 
    associator = cms.InputTag("hltOtherTrackAssociatorByHits"),\ 
    ignoremissingtrackcollection = cms.untracked.bool(True),\ 
    label_tp = cms.InputTag("mix","MergedTrackTruth"),\ 
    label_tr = cms.InputTag("hltPFMuonMerging")\ 
)\