MCEventInfoByteStreamTool Node1 MCEventInfoByteStreamTool + MC_EVENTINFO_ROB_ID + FORMAT_VERSION + MIN_DATA_WORDS - m_robIds - m_eventInfoReadKey - m_cache + MCEventInfoByteStreamTool() + ~MCEventInfoByteStreamTool() + initialize() + convertToBS() + convertFromBS() + robIds() - clearCache() - newRodData() - newRobFragment() Node2 extends< AthAlgTool, IMCEventInfoByteStreamTool >     Node2->Node1