How to make sure GRPOTrainer is patched when I subclass it

[JackCai1206]

In my original script, I subclass the GRPOTrainer for my usecase. I also have an input arg that controls when I want to use UnSloth. I would like to

• call PatchFastRL optionally depending on an input arg
• Make sure when arg is true, the subclassing is done with the patched GRPOTrainer

Right now, since I am not calling PatchFastRL at the beginning of the program, the subclassing is done with the original GRPOTrainer instead.