editGatewayPage.setNextPage(cycle.getPage().getPageName());
editGatewayPage.setCallback(new PageCallback(this));
    public void addGateway(IRequestCycle cycle) {        EditGateway editGatewayPage = (EditGateway) cycle.getPage(EditGateway.PAGE);        Integer id = getRuleId();        editGatewayPage.setRuleId(id);        editGatewayPage.setGatewayId(null);        editGatewayPage.setNextPage(cycle.getPage().getPageName());        cycle.activate(editGatewayPage);    }