default Principal getPrincipalFromTicket(final CasSimpleMultifactorAuthenticationTicket acct) {
        return (Principal) acct.getProperties().get(CasSimpleMultifactorAuthenticationConstants.PROPERTY_PRINCIPAL);
    }
Gets principal from ticket.

@param acct the acct
@return the principal from ticket
support/cas-server-support-simple-mfa-core/src/main/java/org/apereo/cas/mfa/simple/validation/CasSimpleMultifactorAuthenticationService.java