TrigTrtHitCountsCollection_p2.h Node1 TrigTrtHitCountsCollection_p2.h Node2 TrigInDetEventTPCnv /TrigTrtHitCounts_p2.h Node1->Node2 Node3 TrigInDetEventTPCnv /TrigHisto1D_p1.h Node2->Node3 Node4 vector Node3->Node4