code: @SneakyThrows
      protected String generateToken(final Service service, final Map<String, String> parameters) {
          val ticketId = parameters.get(CasProtocolConstants.PARAMETER_TICKET);
          return this.tokenTicketBuilder.build(ticketId, service);
      }
docs: Generate token string.
  
  @param service    the service
  @param parameters the parameters
  @return the jwt