@Override
    public void start() throws IllegalStateException {
        super.start();
        infoHandler.setServerNodeInfoProvider(NAMESPACE, this);
        itemsHandler.setServerNodeInfoProvider(NAMESPACE, this);
        // Add the "out of the box" commands
        addDefaultCommands();
    }
Manager that keeps the list of ad-hoc commands and processing command requests.
xmppserver/src/main/java/org/jivesoftware/openfire/commands/AdHocCommandHandler.java