def METHOD_NAME():
    src = np.asarray(
        [[0, 1], [1, 2], [2, 5], [5, 8], [8, 7], [7, 6], [6, 3], [3, 0]], dtype=int
    )
    pairs = np.asarray([[4, 8]], dtype=int)
    out = pair_isin(src, pairs)
    assert tuple(out) == (False,)