Trk::IDerivCalcTool Node1 Trk::IDerivCalcTool - m_solveOption + ~IDerivCalcTool() + setSolveOption() + setDerivatives() + showStatistics() + setResidualCovMatrix() + setLogStream() + interfaceID() Node2 IAlgTool Node2->Node1 Node3 std::ostream Node3->Node1 #m_logStream Node4 std::basic_ostream < char > Node4->Node3 Node5 std::basic_ios< Char > Node5->Node4 Node6 std::ios_base Node6->Node5