xAODClusterCompressor Node1 xAODClusterCompressor + m_allMoments + m_compressor + m_isEnabled + xAODClusterCompressor() + xAODClusterCompressor() + initialize() + compress() + queryInterface() + interfaceID() Node2 IxAODClusterCompressor + ~IxAODClusterCompressor() + compress() + interfaceID() Node2->Node1 Node3 IService Node3->Node2 Node4 AthService - AthService() - AthService() - operator=() Node4->Node1 Node5 AthCommonMsg< Service > + msg() + msg() + msgLvl() Node5->Node4 Node6 Service Node6->Node5