请考虑以下代码：

class Scratch<T> {
  class InnerClass<T> {
    public void executeHiddenMethod(){
     //..some code to use Inner (T) type
     T r = null; //declared T from inner T type
     //..some code to use Outer (T) type
     //?? How to use outer T type?
    }
  }

//when trying to invoke the code:
public static void main(String[] args) {
    Scratch<String> scr = new Scratch<>();
    Scratch<String>.InnerClass<Double> d = scr.new InnerClass<>();
    d.executeHiddenMethod();
  }
}

• 有没有办法将外部类Scratch的隐藏类型参数显示到内部类InnerClass中？
• 或者，JLS中是否有任何条款禁止在类型参数被隐藏的情况下公开这种情况？