docs: @Override
    public final FieldScopeLogic subScope(
        Descriptor rootDescriptor, FieldDescriptorOrUnknown fieldDescriptorOrUnknown) {
      FieldScopeResult result = policyFor(rootDescriptor, fieldDescriptorOrUnknown);
      if (result.recursive()) {
        return result.included() ? all() : none();
      } else {
        return subScopeImpl(rootDescriptor, fieldDescriptorOrUnknown);
      }
    }