private synchronized void setupRpc(QrConfig cfg) {
        if (!cfg.rpc().enabled()) return;
        supervisor = new Supervisor(new Transport("configured-application")).setDropEmptyBuffers(true);
        supervisor.addMethod(new Method("prepareStop", "d", "", this::prepareStop)
                                     .requireCapabilities(Capability.CONTAINER__MANAGEMENT_API));
        listenRpc(cfg);
    }
Do not delete this method even if it's empty.
Calling this methods forces this class to be loaded,
which runs the static block.
container-disc/src/main/java/com/yahoo/container/jdisc/ConfiguredApplication.java