*/
    public HtmlResponse getRedirectResponseToLogin(final HtmlResponse response) {
        return response;
    }

    /**
     * Gets the redirect response to the root page.
     *
     * @param response The original response.
     * @return The redirect response.
     */
    public HtmlResponse getRedirectResponseToRoot(final HtmlResponse response) {
        return response;
    }

import org.dbflute.optional.OptionalEntity;
import org.lastaflute.web.login.credential.LoginCredential;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.util.LaRequestUtil;

import com.google.api.client.auth.oauth2.AuthorizationCodeRequestUrl;
import com.google.api.client.auth.oauth2.AuthorizationCodeTokenRequest;

import org.lastaflute.core.message.UserMessages;
import org.lastaflute.web.login.credential.LoginCredential;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.StreamResponse;
import org.lastaflute.web.util.LaRequestUtil;
import org.lastaflute.web.util.LaResponseUtil;

import jakarta.annotation.PostConstruct;