src/transformers/models/mvp/tokenization_mvp_fast.py/MvpTokenizerFast/_batch_encode_plus
class MvpTokenizerFast:    def _batch_encode_plus(self, *args, **kwargs) -> BatchEncoding:
        is_split_into_words = kwargs.get("is_split_into_words", False)

        if is_split_into_words and not self.add_prefix_space:
            raise ValueError(
                f"You need to instantiate {self.__class__.__name__} with add_prefix_space=True "
                "to use it with pretokenized inputs."
            )

        return super()._batch_encode_plus(*args, **kwargs)