@RequestMapping(
     value = "/system/os",
     method = RequestMethod.GET,
     produces = {MediaType.APPLICATION_JSON_VALUE})
 public String getOsInfo() {
   return info.getSystem().getOsNameAndVersion();
 }
 @RequestMapping(
     value = "/system/java",
     method = RequestMethod.GET,
     produces = {MediaType.APPLICATION_JSON_VALUE})
 public String getJavaVersion() {
   return info.getSystem().getJavaSpecificationVersion();
 }
 @RequestMapping(
     value = "/system/packages",
     method = RequestMethod.GET,
     produces = {MediaType.APPLICATION_JSON_VALUE})
 public String getInstalledPackages() {
   return info.getSystem().getInstalledPackages();
 }
 @RequestMapping(
     value = "/system",
     method = RequestMethod.GET,
     produces = {MediaType.APPLICATION_JSON_VALUE})
 public SystemInfo getSystemInfo() {
   return info.getSystem();
 }