def METHOD_NAME(arrs):
    """Stack arrays in sequence vertically (row wise) while preserving units
    This is a wrapper around np.vstack that preserves units.
    Examples
    --------
    >>> from unyt import km
    >>> a = [1, 2, 3]*km
    >>> b = [2, 3, 4]*km
    >>> print(uvstack([a, b]))
    [[1 2 3]
     [2 3 4]] km
    """
    v = np.vstack(arrs)
    v = _validate_numpy_wrapper_units(v, arrs)
    return v