def word_delimiter_token(self) -> str:
        """
        `str`: Padding token. Log an error if used while not having been set.
        """
        if self._word_delimiter_token is None and self.verbose:
            logger.error("Using word_delimiter_token, but it is not set yet.")
            return None
        return str(self._word_delimiter_token)

        `str`: Padding token. Log an error if used while not having been set.
        
dpkd/transformers/src/transformers/models/wav2vec2/tokenization_wav2vec2.py