code: public JwtTicketCipherExecutor getTokenTicketCipherExecutorForService(final RegisteredService registeredService) {
          val encryptionKey = getEncryptionKey(registeredService).orElse(StringUtils.EMPTY);
          val signingKey = getSigningKey(registeredService).orElse(StringUtils.EMPTY);
          return new JwtTicketCipherExecutor(encryptionKey, signingKey,
              StringUtils.isNotBlank(encryptionKey), StringUtils.isNotBlank(signingKey), 0, 0);
      }
docs: Gets token ticket cipher executor for service.
  
  @param registeredService the registered service
  @return the token ticket cipher executor for service