public void stop() {
        if( !started ) {
            throw new IllegalStateException(getClass().getSimpleName() + " not started.");
        }
        for( Service<T> s : services ) {
            if( log.isLoggable(Level.FINE) ) {
                log.log(Level.FINE, "Stopping service:{0}", s);
            }
            s.stop();
        }
        started = false;
    }
Stops all services and puts the service manager into a stopped state.
jme3-networking/src/main/java/com/jme3/network/service/ServiceManager.java