IDTPM::IVertexSelectionTool Node1 IDTPM::IVertexSelectionTool   + selectVertices() Node4 IDTPM::VertexQualitySelectionTool   + ASG_TOOL_CLASS() + VertexQualitySelectionTool() + ~VertexQualitySelectionTool() + initialize() + selectVertices() Node1->Node4 Node2 asg::IAsgTool   + ~IAsgTool() + print() Node2->Node1 Node3 IAlgTool     Node3->Node2