private static final BaseEncoding BASE64URL_DECODER = BaseEncoding.base64Url().withSeparator("\n", 64);

    /** Configuration key for OpenID Connect authorization server URL. */
    protected static final String OIC_AUTH_SERVER_URL = "oic.auth.server.url";

    /** Configuration key for OpenID Connect client ID. */
    protected static final String OIC_CLIENT_ID = "oic.client.id";

Fess is based on [OpenSearch](https://github.com/opensearch-project/OpenSearch), but knowledge/experience about OpenSearch is _not_ required. Fess provides an easy to use Administration GUI to configure the system via your browser.

 * saml.sp.base.url=https://your-fess-server.example.com
 * </pre>
 *
 * <h3>Option 2: Set individual SP URLs</h3>
 * <pre>
 * # SP Entity ID (Audience URI in IdP)
 * saml.sp.entityid=https://your-fess-server.example.com/sso/metadata
 *
 * # Assertion Consumer Service URL
 * saml.sp.assertion_consumer_service.url=https://your-fess-server.example.com/sso/
 *
 * # Single Logout Service URL

					<charset>UTF-8</charset>
					<locale>en_US</locale>
					<windowtitle>Open Source Enterprise Search: Fess API</windowtitle>
					<header>&lt;a href="https://fess.codelibs.org/" target="_blank"&gt;Enterprise Search Server: Fess&lt;/a&gt;</header>
					<excludePackageNames>
						org.codelibs.fess.mylasta.*,
						org.codelibs.fess.opensearch.config.*,
						org.codelibs.fess.opensearch.common.*,
						org.codelibs.fess.opensearch.log.*,