static String normalizeTicketId(final String id) {
        val prefix = TransientSessionTicket.PREFIX + '-';
        return StringUtils.prependIfMissingIgnoreCase(id, prefix);
    }
Normalize ticket id string.

@param id the id
@return the string
api/cas-server-core-api-ticket/src/main/java/org/apereo/cas/ticket/TransientSessionTicketFactory.java