}
  }

  public void testGenericInterfaceReturnedByGenericMethod() {
    new GenericInterface2DefaultValueChecker().check();
  }

  private abstract static class AbstractGenericDefaultValueChecker<T> extends DefaultValueChecker {

    @SuppressWarnings("unused") // called by NullPointerTester
    @Keep
    public void checkGeneric(T value, String s) {
      calledWith(value, s);
    }