PunchThroughG4Tool::InfoMap Node1 PunchThroughG4Tool ::InfoMap   + InfoMap() Node2 std::string     Node2->Node1 +name Node3 std::basic_string< Char >     Node3->Node2 Node4 std::vector< double > + elements + elements   Node4->Node1 +etaMaxs +etaMins Node5 std::vector< int > + elements + elements   Node5->Node1 +pidStr