protected ExpirationPolicy determineExpirationPolicyForService(final RegisteredService registeredService) {
        return expirationPolicyBuilder.buildTicketExpirationPolicyFor(registeredService);
    }
Default OAuth refresh token factory.

@author Jerome Leleu
@since 5.0.0
support/cas-server-support-oauth-core-api/src/main/java/org/apereo/cas/ticket/refreshtoken/OAuth20DefaultRefreshTokenFactory.java