dqutils::MonitoringFile::CopyHistogram Node1 dqutils::MonitoringFile ::CopyHistogram + CopyHistogram() + CopyHistogram() + operator=() + ~CopyHistogram() + execute() + execute() + execute() + executeMD() + executeMD() + executeMD() # fillMD() Node2 dqutils::MonitoringFile ::HistogramOperation + ~HistogramOperation() + execute() + execute() + execute() + executeMD() + executeMD() + executeMD() Node2->Node1 Node3 TTree Node3->Node1 #m_metadata Node4 TDirectory Node4->Node1 #m_target Node5 std::string Node5->Node1 #m_dirName Node6 std::basic_string< char > Node6->Node5