CheckAppliedSFs.SystematicComparer Node1 CheckAppliedSFs.Systematic Comparer - __sys_old - __sys_new + __init__() + fill() Node2 CheckAppliedSFs.ReleaseComparer - __old_branch - __new_branch - __old_weight - __new_weight - __quality_branch - __min_quality - __max_quality - __var_name - __old_histo - __new_histo + __init__() + pass_cut() + fill() + get_old_histo() + get_new_histo() + get_old_var() + get_new_var() + get_old_weight() + get_new_weight() + finalize() + name() Node2->Node1 Node3 object Node3->Node2