Hi Hand-Martin,
the function Process as well as Simulate can be used during the competition.
They are necessary for algorithms such as MCTS and do follow the rules, since we tried to strip all the information that would not be allowed from the users view.
Please make sure to replace the hand card set of the opponent if you want to simulate his move as well.
By default the opponent will temporarely only have useless cards on his hand, such that you can not look into his real cards.
Best Regards,
Alex