def METHOD_NAME():
    image = np.zeros((5, 5), dtype=bool)
    image[2:5, 2:5] = True
    ref = np.array([[False, False, False, False, False],
                    [False, False,  True,  True,  True],
                    [False,  True,  True,  True,  True],
                    [False,  True,  True, False, False],
                    [False,  True,  True, False, False]], dtype=bool)
    result = find_boundaries(image)
    assert_array_equal(result, ref)