Produce an iterator rolling windows rows over our data.
        Each emitted window will have `window_length` rows.

        Parameters
        ----------
        window_length : int
            The number of rows in each emitted window.
        offset : int, optional
            Number of rows to skip before the first window.  Default is 0.
        perspective_offset : int, optional
            Number of rows past the end of the current window from which to
            "view" the underlying data.

def traverse(self,
                 window_length,
                 offset=0,
                 perspective_offset=0):
        """
        Produce an iterator rolling windows rows over our data.
        Each emitted window will have `window_length` rows.

        Parameters
        ----------
        window_length : int
            The number of rows in each emitted window.
        offset : int, optional
            Number of rows to skip before the first window.  Default is 0.
        perspective_offset : int, optional
            Number of rows past the end of the current window from which to
            "view" the underlying data.
        """
        data = self._data.copy()
        _check_window_params(data, window_length)
        return self._iterator_type(
            data,
            self._view_kwargs,
            self.adjustments,
            offset,
            window_length,
            perspective_offset,
            rounding_places=None,
        )