python.samplers.EEtaMPhiSampler Node1 python.samplers.EEtaMPhi Sampler + energy + eta + mass + phi - _e - _eta - _m - _phi + __init__() + energy() + energy() + eta() + eta() + mass() + mass() + phi() + phi() + shoot() Node2 python.samplers.MomSampler Node2->Node1 Node3 python.samplers.Sampler + shoot() + __call__() Node3->Node2 Node4 object Node4->Node3