src/transformers/models/gptsan_japanese/tokenization_gptsan_japanese.py/GPTSanJapaneseTokenizer/_convert_id_to_token
class GPTSanJapaneseTokenizer:    def _convert_id_to_token(self, index):
        """Converts an index (integer) in a token (str) using the vocab."""
        return self.subword_tokenizer.convert_id_to_token(index)