return (FrameworkInstallationService) getProxy(objectName, FrameworkInstallationService.class);
return (InstallationServiceMBean) getProxy(objectName, InstallationServiceMBean.class);
    public FrameworkInstallationService getInstallationService() throws IOException {        ObjectName objectName = getObjectName(InstallationService.class);        return (FrameworkInstallationService) getProxy(objectName, FrameworkInstallationService.class);    }