nullPointerTester.testStaticMethods(cls, visibility);
    if (hasInstanceMethodToTestNulls(cls, visibility)) {
      Object instance = instantiate(cls);
      if (instance != null) {
        nullPointerTester.testInstanceMethods(instance, visibility);
      }
    }
  }

  private boolean hasInstanceMethodToTestNulls(Class<?> c, Visibility visibility) {