MyFile(String s) { super(s) }
            }

            @Managed
            interface ManagedThing {
                @Unmanaged
                UnmanagedThing getUnmanaged()
                void setUnmanaged(UnmanagedThing unmanaged)

                @Unmanaged
                MyFile getFile()
                void setFile(MyFile file)
            }

            class RulePlugin extends RuleSource {