JetSubStructureUtils::EnergyCorrelator Node1 JetSubStructureUtils ::EnergyCorrelator + EnergyCorrelator() + result() + description() + result() Node2 JetSubStructureUtils ::SubstructureCalculator < double > + result() Node2->Node1 Node3 fastjet::FunctionOfPseudo Jet< double > Node3->Node2 Node4 fastjet::contrib::Energy Correlator Node4->Node1