ActsTrk::TrackFindingAlg::TrackFindingDefaultOptions Node1 ActsTrk::TrackFindingAlg ::TrackFindingDefaultOptions + options + secondOptions Node2 std::unique_ptr< ActsTrk ::IMeasurementSelector > + operator->() Node2->Node1 +measurementSelector Node3 ActsTrk::IMeasurementSelector + ~IMeasurementSelector() + connect() Node3->Node2 +ptr