How to use the larray.sequence function in larray

def slice_to_sequence(axis, axis_key):
        if isinstance(axis_key, slice) and axis in la_key_axes:
            # TODO: sequence assumes the axis in the la_key is in the same order. It will be easier to solve when
            # make_numpy_broadcastable automatically aligns all arrays
            start, stop, step = axis_key.indices(len(axis))
            return la.sequence(axis.subaxis(axis_key), initial=start, inc=step)
        else:
            return axis_key