// Test equals method for enum constants
        assertTrue(SsoResponseType.METADATA.equals(SsoResponseType.METADATA));
        assertTrue(SsoResponseType.LOGOUT.equals(SsoResponseType.LOGOUT));
        assertFalse(SsoResponseType.METADATA.equals(SsoResponseType.LOGOUT));
        assertFalse(SsoResponseType.LOGOUT.equals(SsoResponseType.METADATA));
        assertFalse(SsoResponseType.METADATA.equals(null));

    /**
     * Gets the action response for the specified SSO response type.
     * @param responseType The type of SSO response required.
     * @return The action response.
     */
    ActionResponse getResponse(SsoResponseType responseType);

    /**
     * Performs logout for the specified user.
     * @param user The user to logout.
     * @return The logout URL or null if not applicable.
     */
    String logout(FessUserBean user);

     * @return The action response from the SSO authenticator, or null if SSO is not available
     */
    public ActionResponse getResponse(final SsoResponseType responseType) {
        if (available()) {
            final SsoAuthenticator authenticator = getAuthenticator();
            if (authenticator != null) {
                return authenticator.getResponse(responseType);

import org.codelibs.fess.app.web.search.SearchAction;
import org.codelibs.fess.entity.RequestParameter;
import org.codelibs.fess.exception.SsoMessageException;
import org.codelibs.fess.sso.SsoManager;
import org.codelibs.fess.sso.SsoResponseType;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.Execute;
import org.lastaflute.web.UrlChain;
import org.lastaflute.web.login.credential.LoginCredential;