Access to jdk.hotspot.agent classes in Java 9?

[David Griffiths]

Hi, I'm writing some code that makes use of the SA classes under
sun.jvm.hotspot. This compiles and runs fine under Java 8 provided I
include sa-jdi.jar but I've just discovered that these are now classified
as JDK internal API in Java 9. There is no alternative so what should I do?

Thanks,

David