• _average_area : ClusterSequenceActiveArea
• _history : ClusterSequence
• _jets : ClusterSequence
• _pieces : CompositeJetStructure
• _rho : Filter
• _selector : Filter
• _subjet_def : Filter
• child : ClusterSequence::history_element
• dij : ClusterSequence::history_element
• jetp_index : ClusterSequence::history_element
• max_dij_so_far : ClusterSequence::history_element
• parent2 : ClusterSequence::history_element