Analysis::IJetTruthMatching::MatchInfo Node1 Analysis::IJetTruthMatching ::MatchInfo + jetLabel + NEventInCollection + barcode + pdg + deltaRMinTo() Node2 std::map< std::string, double > + elements Node2->Node1 +distanceToQuarks Node3 std::string Node3->Node2 +keys Node4 std::basic_string< char > Node4->Node3