InDet::StagedTrackingGeometryBuilder Node1 InDet::StagedTrackingGeometry Builder - m_layerProviders + StagedTrackingGeometryBuilder() + ~StagedTrackingGeometryBuilder() + initialize() + trackingGeometry() + geometrySignature() Node2 extends< StagedTrackingGeometry BuilderImpl, Trk::IGeometryBuilder > Node2->Node1