About the prediction of surrounding vehicles

In the paper “Computing the Drivable Area of Autonomous Road Vehicles in Dynamic Road Scenes”, different prediction of surrounding vehicles when calculating reachable sets are presented, namely conservative prediction and constant velocity prediction, as showed in Fig 12. and 13., I wonder if this feature is provided in the package commonroad-reach, that allows me to modify the prediction of surrounding vehicles, or where should I look for this part in the source code?