code: protected void enforceTicketValidationAuthorizationFor(final HttpServletRequest request, final Service service, final Assertion assertion) {
          val authorizers = serviceValidateConfigurationContext.getValidationAuthorizers().getAuthorizers();
          for (val a : authorizers) {
              try {
                  a.authorize(request, service, assertion);
              } catch (final Exception e) {
                  throw new UnauthorizedServiceTicketValidationException(service);
              }
          }
      }
docs: Enforce ticket validation authorization for.
  
  @param request   the request
  @param service   the service
  @param assertion the assertion