asg::IUnitTestTool3 Node1 asg::IUnitTestTool3 + getSubtool() + subsubtoolEmpty() + getSubsubtool() Node4 asg::UnitTestTool3 - m_subtool0 - m_subtool1 - m_subtool2 - m_propertyName - m_usePublic + UnitTestTool3() + initialize() + getSubtool() + getSubsubtool() + subsubtoolEmpty() Node1->Node4 Node2 asg::IAsgTool + ~IAsgTool() + print() Node2->Node1 Node3 IAlgTool Node3->Node2