1 std::make_unique<Fallback>( 2 ${indent(1)}ConfigFans::get()[${f.fan}], 3 ${indent(1)}std::vector<std::reference_wrapper<PresenceSensor>>{ 4 % for s in f.sensors: 5 ${indent(2)}*ConfigSensors::get()[${s}], 6 % endfor 7 ${indent(1)}})\ 8