A ClassVisitor that verifies HotSpotVMConfig does not access Unsafe from
any of its non-static, non-constructor methods. This ensures that a deserialized
HotSpotVMConfig object does not perform any unsafe reads on addresses that are only valid
in the context in which the object was serialized. Note that this does not catch cases where a
client uses an address stored in a HotSpotVMConfig field.