code: @RequestMapping(
              value = USERINFO_ENDPOINT_URI,
              produces = USERINFO_CONTENT_TYPE,
              method = {RequestMethod.GET, RequestMethod.POST})
      public String userInfo(
              HttpServletRequest request,
              @RequestParam(value = "claims", required = false) String claims,
              @RequestParam(value = "groups", required = false) String groups) {
  
          final IPerson person = personManager.getPerson(request);
          return createToken(person, claims, groups);
      }
docs: Obtain an OIDC Id token for the current user.