@Retention(value=CLASS)
@Target(value=TYPE)
public @interface CUpgrade
Upgrade the version of a class to use never java features.
This does not upgrade any code, it only changes the version of the class.
Downgrading is not possible.
The new version of the class.
If the version is not specified, the class will be upgraded to the version of the transformer.
If the class version is higher than the given one, nothing will change.