code: protected boolean isTicketAuthenticityVerified(final String ticketId) {
          if (this.cipherExecutor != null) {
              LOGGER.trace("Attempting to decode service ticket [{}] to verify authenticity", ticketId);
              return !StringUtils.isEmpty(this.cipherExecutor.decode(ticketId));
          }
          return !StringUtils.isEmpty(ticketId);
      }
docs: Verify the ticket id received is actually legitimate
  before contacting downstream systems to find and process it.
  
  @param ticketId the ticket id
  @return true/false