public RoundToDoubleTester roundUnnecessaryShouldThrow() {
      unnecessaryShouldThrow = true;
      return this;
    }

    public void test() {
      assertThat(expectedValues.keySet())
          .containsAtLeastElementsIn(EnumSet.complementOf(EnumSet.of(UNNECESSARY)));
      for (Map.Entry<RoundingMode, Double> entry : expectedValues.entrySet()) {
        RoundingMode mode = entry.getKey();
        Double expectation = entry.getValue();

    assertThat(invokableMethods).containsAtLeastElementsIn(accessibleObjectMethods);
    ImmutableSet<String> genericDeclarationMethods =
        publicMethodSignatures(GenericDeclaration.class, ImmutableSet.<String>of());
    assertThat(invokableMethods).containsAtLeastElementsIn(genericDeclarationMethods);
  }

  private static ImmutableSet<String> publicMethodSignatures(

    assertThat(invokableMethods).containsAtLeastElementsIn(accessibleObjectMethods);
    ImmutableSet<String> genericDeclarationMethods =
        publicMethodSignatures(GenericDeclaration.class, ImmutableSet.<String>of());
    assertThat(invokableMethods).containsAtLeastElementsIn(genericDeclarationMethods);
  }

  private static ImmutableSet<String> publicMethodSignatures(