@Test
  public void testFunkyNullable() {
    FunkyNullable explicitNull = FunkyNullable.builder().setFoo(null).setBar(null).build();
    FunkyNullable implicitNull = FunkyNullable.builder().build();
    assertThat(explicitNull).isEqualTo(implicitNull);
  }
Returns a set containing this test's {@link Nullable @Nullable} annotation, plus possibly
another {@code @Nullable} that is present on the parameter of {@link Object#equals}.
value/src/it/functional/src/test/java/com/google/auto/value/AutoValueJava8Test.java