@Override
    public ProxyGrantingTicket grantProxyGrantingTicket(final String id, final Authentication authentication,
                                                        final ExpirationPolicy expirationPolicy) {
        val pgt = new ProxyGrantingTicketImpl(id, this.service, this.getTicketGrantingTicket(), authentication, expirationPolicy);
        getTicketGrantingTicket().getProxyGrantingTickets().put(pgt.getId(), this.service);
        return pgt;
    }
Mock service ticket.

@author Marvin S. Addison
@since 3.0.0
core/cas-server-core-tickets/src/test/java/org/apereo/cas/mock/MockServiceTicket.java