@Override
    public ExpirationPolicy buildTicketExpirationPolicy() {
        return toProxyTicketExpirationPolicy();
    }
This is {@link ProxyTicketExpirationPolicyBuilder}.

@author Misagh Moayyed
@since 6.1.0
core/cas-server-core-tickets-api/src/main/java/org/apereo/cas/ticket/expiration/builder/ProxyTicketExpirationPolicyBuilder.java