runTester();
      FromTo<?, ?> defaultFunction = (FromTo<?, ?>) getDefaultParameterValue(0);
      assertEquals(0, defaultFunction.apply(null));
    }
  }

  public void testGenericInterfaceDefaultValue() {
    new GenericInterfaceDefaultValueChecker().check();
  }

  private interface NullRejectingFromTo<F, T> extends Function<F, T> {
    @Override
    T apply(F from);
  }