def __tokens2chars__(self) -> Dict[int, Tuple[int, int]]:
        """DEPRECATED, please use the ``argilla.utils.span_utils.SpanUtils.chars_to_token_idx`` attribute."""
        warnings.warn(
            "The `__tokens2chars__` attribute is deprecated and will be removed in a"
            " future version. Please use the"
            " `argilla.utils.span_utils.SpanUtils.token_to_char_idx` attribute"
            " instead.",
            FutureWarning,
        )
        return self._span_utils.token_to_char_idx
DEPRECATED, please use the ``argilla.utils.span_utils.SpanUtils.chars_to_token_idx`` attribute.
argilla-v1/src/argilla_v1/client/models.py