The binder currently uses MethodHandles::publicLookup in order to fetch a method handle given a reflective Method.

However, since the binder code is in java.base, which doesn't read the user module, a normal MethodHandle::lookup will be unable to get there.

For this reason the code uses MethodHandles::publicLookup instead, which works as long as the method lives in an unconditionally exported package.

While this has been acceptable so far, if the user code also lives in a module and the method to be unreflected lives in a non-exported package, the binder will fail to look that up. Some other solution is thus required.