src/transformers/models/herbert/tokenization_herbert_fast.py/HerbertTokenizerFast/__init__
class HerbertTokenizerFast:    def __init__(
        self,
        vocab_file=None,
        merges_file=None,
        tokenizer_file=None,
        cls_token="<s>",
        unk_token="<unk>",
        pad_token="<pad>",
        mask_token="<mask>",
        sep_token="</s>",
        **kwargs,
    ):
        super().__init__(
            vocab_file,
            merges_file,
            tokenizer_file=tokenizer_file,
            cls_token=cls_token,
            unk_token=unk_token,
            pad_token=pad_token,
            mask_token=mask_token,
            sep_token=sep_token,
            **kwargs,
        )