class CasClient extends IndirectClient {

    @Getter
    @Setter
    private CasConfiguration configuration = new CasConfiguration();

    /**
     * <p>Constructor for CasClient.</p>
     */
    public CasClient() { }

    /**
     * <p>Constructor for CasClient.</p>
     *
     * @param configuration a {@link CasConfiguration} object
     */
    public CasClient(final CasConfiguration configuration) {
        setConfiguration(configuration);
    }

    /** {@inheritDoc} */
    @Override
    protected void internalInit(final boolean forceReinit) {<FILL_FUNCTION_BODY>}

    /** {@inheritDoc} */
    @Override
    protected CallbackUrlResolver newDefaultCallbackUrlResolver() {
        return new QueryParameterCallbackUrlResolver(configuration.getCustomParams());
    }

    /** {@inheritDoc} */
    @Override
    public void notifySessionRenewal(final CallContext ctx, final String oldSessionId) {
        val sessionLogoutHandler = findSessionLogoutHandler();
        if (sessionLogoutHandler != null) {
            findSessionLogoutHandler().renewSession(ctx, oldSessionId);
        }
    }
}

        assertNotNull("configuration", configuration);
        configuration.setUrlResolver(this.getUrlResolver());

        setRedirectionActionBuilderIfUndefined(new CasRedirectionActionBuilder(configuration, this));
        setCredentialsExtractorIfUndefined(new CasCredentialsExtractor(configuration));
        setAuthenticatorIfUndefined(new CasAuthenticator(configuration, getName(),getUrlResolver(), getCallbackUrlResolver(),
            callbackUrl, findSessionLogoutHandler()));
        setLogoutProcessorIfUndefined(new CasLogoutProcessor(configuration, findSessionLogoutHandler()));
        setLogoutActionBuilderIfUndefined(new CasLogoutActionBuilder(configuration.computeFinalPrefixUrl(null) + "logout",
            configuration.getPostLogoutUrlParameter()));
        addAuthorizationGenerator(new DefaultCasAuthorizationGenerator());
    
<methods>public non-sealed void <init>() ,public java.lang.String computeFinalCallbackUrl(org.pac4j.core.context.WebContext) ,public java.lang.String getCodeVerifierSessionAttributeName() ,public final Optional<org.pac4j.core.exception.http.RedirectionAction> getLogoutAction(CallContext, org.pac4j.core.profile.UserProfile, java.lang.String) ,public java.lang.String getNonceSessionAttributeName() ,public final Optional<org.pac4j.core.exception.http.RedirectionAction> getRedirectionAction(CallContext) ,public java.lang.String getStateSessionAttributeName() ,public org.pac4j.core.exception.http.HttpAction processLogout(CallContext, org.pac4j.core.credentials.Credentials) <variables>public static final java.lang.String ATTEMPTED_AUTHENTICATION_SUFFIX,private static final java.lang.String CODE_VERIFIER_SESSION_PARAMETER,private static final java.lang.String NONCE_SESSION_PARAMETER,private static final java.lang.String STATE_SESSION_PARAMETER,private org.pac4j.core.http.ajax.AjaxRequestResolver ajaxRequestResolver,protected java.lang.String callbackUrl,protected org.pac4j.core.http.callback.CallbackUrlResolver callbackUrlResolver,private boolean checkAuthenticationAttempt,private org.pac4j.core.logout.LogoutActionBuilder logoutActionBuilder,private org.pac4j.core.logout.processor.LogoutProcessor logoutProcessor,private org.pac4j.core.redirect.RedirectionActionBuilder redirectionActionBuilder,protected org.pac4j.core.http.url.UrlResolver urlResolver