public static Ticket getDelegatedAuthenticationLogoutRequestTicket(final RequestContext requestContext) {
        return requestContext.getFlowScope().get(FLOW_SCOPE_ATTR_DELEGATED_AUTHN_PROVIDER_PRIMARY, Ticket.class);
    }
Gets delegated authentication logout request ticket.

@param requestContext the request context
@return the delegated authentication logout request ticket
support/cas-server-support-pac4j-core/src/main/java/org/apereo/cas/web/flow/DelegationWebflowUtils.java