Hi. What are APIs or process to add instance-local attributes on my mop wrapper object?
I see no object instance-local version of `max_jit_class_addattr()`
I tried and failed with `object_addattr(ptrWrapperObject, attr)`
I tried and failed with `object_addattr_format(...)`
Both of those fails were silent. No errors. And no attribute appeared on the object in the inspector.