public DoubleArrayAsIterable usingTolerance(double tolerance) {
    return new DoubleArrayAsIterable(tolerance(tolerance), iterableSubject());
  }
@Test
  public void usingTolerance_containsExactly_primitiveDoubleArray_success() {
    assertThat(array(1.1, TOLERABLE_2POINT2, 3.3))
        .usingTolerance(DEFAULT_TOLERANCE)
        .containsExactly(array(2.2, 1.1, 3.3));
  }