src/transformers/models/gpt_sw3/tokenization_gpt_sw3.py/GPTSw3Tokenizer/_convert_id_to_token
class GPTSw3Tokenizer:    def _convert_id_to_token(self, index: int) -> str:
        """Converts an index (int) to a token (str) using the vocab."""
        return self.sp_model.IdToPiece(index)