def __chars2tokens__(self) -> Dict[int, int]:
        """DEPRECATED, please use the ``argilla.utils.span_utils.SpanUtils.chars_to_token_idx`` attribute."""
        warnings.warn(
            "The `__chars2tokens__` attribute is deprecated and will be removed in a"
            " future version. Please use the"
            " `argilla.utils.span_utils.SpanUtils.char_to_token_idx` attribute"
            " instead.",
            FutureWarning,
        )
        return self._span_utils.char_to_token_idx
DEPRECATED, please use the ``argilla.utils.span_utils.SpanUtils.chars_to_token_idx`` attribute.
argilla-v1/src/argilla_v1/client/models.py