未检查泛型类的类型转换？(Unchecked typecasting of generic class?)

我正在尝试编写一个方法，我可以在运行时将字符串转换为枚举对象，用于通用枚举。我有一个方法签名：

public static <T extends Enum<T>> Enum<T> foo(String string, Class<T> clazz)

不过，我从一个泛型类型参数没有明确扩展Enum的类调用它。即

class bar<X> { private Class<X> clazz; if (XIsAnEnum()) { foo(string, clazz) } }

这不能编译，因为即使我知道，从XIsAnEnum的逻辑中， X extends Enum<X> ，我没有在泛型类型参数定义中明确说明这一点，所以它不是一个有效的参数。

有没有办法从Class<X>到Class<X extends Enum<X>>进行未经检查的强制转换，或者我必须创建一个新类bar2<X extends Enum<X>>专门用于我想要使用的时候枚举？

I am trying to write a method where I can convert from a string to an enum object at runtime, for a generic enum. I have a method signature:

public static <T extends Enum<T>> Enum<T> foo(String string, Class<T> clazz)

However, I am calling it from a class whose generic type parameter does not explicitly extend Enum. i.e.

class bar<X> { private Class<X> clazz; if (XIsAnEnum()) { foo(string, clazz) } }

This does not compile because even though I know, from the logic of XIsAnEnum, that X extends Enum<X>, I don't explicitly state this in the generic type parameter definition, so it is not a valid argument.

Is there a way to do an unchecked cast from Class<X> to Class<X extends Enum<X>>, or will I have to make a new class bar2<X extends Enum<X>> specifically for when I want to use enums?