@Override
    public String getPrefix() {
        return ProxyTicket.PROXY_TICKET_PREFIX;
    }
The {@link ProxyTicketImpl} is a concrete implementation of the {@link ProxyTicket}.

@author Misagh Moayyed
@since 4.2
core/cas-server-core-tickets-api/src/main/java/org/apereo/cas/ticket/ProxyTicketImpl.java