transformers

574e68d5 - Allow `Trainer.get_optimizer_cls_and_kwargs` to be overridden (#31875)

Allow `Trainer.get_optimizer_cls_and_kwargs` to be overridden (#31875) * Change `Trainer.get_optimizer_cls_and_kwargs` to `self.` * Make `get_optimizer_cls_and_kwargs` an instance method * Fixing typo * Revert `get_optimizer_cls_and_kwargs` to staticmethod * restore newline to trainer.py eof