The MATSim simulation by default does not consider parking infrastructure or supply constraints.For technical reasons, the modeling efforts around parking in MATSim are divided in two parts
parking choice and parking search.
This is probably a parking choice implementation of an approach where
parking spaces on a per link basis are limited (somehow taken from external data)
cars that attempt to park are always accepted but the drivers obtain a negative score for this
over the iterations, parking supply is balanced with parking demand
Walk from/to the parked vehicle is not executed, not even as teleportation, that is, it consumes zero time.
While integrating parking into existing simulations, some agent may have plans like
home - car - work - pt - home - car - shopping - car - home
i.e, the person's car is at a considerably different location than the person using the car.