Trk::IExtrapolator Node1 Trk::IExtrapolator + ~IExtrapolator() + extrapolate() + extrapolate() + extrapolateStepwise() + extrapolateTrack() + extrapolateDirectly() + extrapolateBlindly() + extrapolateToNextActiveLayerM() + extrapolateToVolume() + extrapolateM() + collectIntersections() + trackingGeometry() + interfaceID() Node2 IAlgTool Node2->Node1