src/transformers/models/roformer/tokenization_roformer_fast.py/RoFormerTokenizerFast/__setstate__
class RoFormerTokenizerFast:    def __setstate__(self, d):
        self.__dict__ = d
        vocab = self.__dict__["_tokenizer"].get_vocab()
        self.__dict__["_tokenizer"].pre_tokenizer = PreTokenizer.custom(JiebaPreTokenizer(vocab))