@Test
  public void testYesNoValueConversion() {
    Assert.assertTrue(yesNoConverter.convertToModel("yes", Boolean.class, null));
    Assert.assertFalse(yesNoConverter.convertToModel("no", Boolean.class, null));

    Assert.assertEquals("yes", yesNoConverter.convertToPresentation(true, String.class, null));
    Assert.assertEquals("no", yesNoConverter.convertToPresentation(false, String.class, null));
  }
  @Test
  public void testLocale() {
    Assert.assertEquals(
        "May 18, 2033", localeConverter.convertToPresentation(true, String.class, Locale.US));
    Assert.assertEquals(
        "January 24, 2065", localeConverter.convertToPresentation(false, String.class, Locale.US));

    Assert.assertEquals(
        "18. Mai 2033", localeConverter.convertToPresentation(true, String.class, Locale.GERMANY));
    Assert.assertEquals(
        "24. Januar 2065",
        localeConverter.convertToPresentation(false, String.class, Locale.GERMANY));
  }