def _update_strl_names(self):
        """Update column names for conversion to strl if they might have been
        changed to comply with Stata naming rules"""
        # Update convert_strl if names changed
        for orig, new in self._converted_names.items():
            if orig in self._convert_strl:
                idx = self._convert_strl.index(orig)
                self._convert_strl[idx] = new
Update column names for conversion to strl if they might have been
        changed to comply with Stata naming rules