def _guess_normalized(self):
        """Returns true if the collated counts in `self._results` appear to be normalized.

        Notes
        -----
        It's possible that the _results df has already been normalized, which can cause some
        methods to fail. This method lets us guess whether that's true and act accordingly.
        """
        return (
            getattr(self, "_normalized", False)
            or getattr(self, "_field", None) == "abundance"
            or bool((self._results.sum(axis=1).round(4) == 1.0).all())
        )
Returns true if the collated counts in `self._results` appear to be normalized.

        Notes
        -----
        It's possible that the _results df has already been normalized, which can cause some
        methods to fail. This method lets us guess whether that's true and act accordingly.