if (authenticator != null && fessConfig.getSystemPropertyAsBoolean(SPNEGO_INITIALIZED, false)) {
            return authenticator;
        }
        try {
            // set some System properties
            final SpnegoFilterConfig config = SpnegoFilterConfig.getInstance(new SpengoConfig());

            // pre-authenticate
            authenticator = new org.codelibs.spnego.SpnegoAuthenticator(config);

    val hostnameVerifier: HostnameVerifier? = address.hostnameVerifier
    val certificatePinner: CertificatePinner? = address.certificatePinner
  }

  @Test
  fun authenticator() {
    var authenticator: Authenticator = Authenticator { route, response -> TODO() }
  }

  @Test
  fun cache() {
    val cache = Cache(File("/cache/"), Integer.MAX_VALUE.toLong())
    cache.initialize()
    cache.delete()

    val hostnameVerifier: HostnameVerifier = client.hostnameVerifier()
    val certificatePinner: CertificatePinner = client.certificatePinner()
    val proxyAuthenticator: Authenticator = client.proxyAuthenticator()
    val authenticator: Authenticator = client.authenticator()
    val connectionPool: ConnectionPool = client.connectionPool()
    val dns: Dns = client.dns()
    val followSslRedirects: Boolean = client.followSslRedirects()

   serverSocketFactory
 * **MultipartBody.Part**: body, headers
 * **MultipartBody.**: boundary, parts, size, type
 * **OkHttpClient**: authenticator, cache, callTimeoutMillis, certificatePinner,
   connectTimeoutMillis, connectionPool, connectionSpecs, cookieJar, dispatcher, dns,
   eventListenerFactory, followRedirects, followSslRedirects, hostnameVerifier, interceptors,

    public LoginCredential getLoginCredential() {
        return LaRequestUtil.getOptionalRequest().map(request -> {
            if (logger.isDebugEnabled()) {
                logger.debug("Logging in with SAML Authenticator");
            }

            final HttpServletResponse response = LaResponseUtil.getResponse();

            final HttpSession session = request.getSession(false);
            if (session != null) {

import jcifs.CIFSContext;
import jcifs.CIFSException;
import jcifs.spnego.NegTokenInit;


/**
 * Base kerberos authenticator
 * 
 * Uses a subject that contains kerberos credentials for use in GSSAPI context establishment.
 * 
 * Be advised that short/NetBIOS name usage is not supported with this authenticator. Always specify full FQDNs.

 */

package jcifs.smb1.http;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;

import java.net.Authenticator;
import java.net.HttpURLConnection;
import java.net.PasswordAuthentication;
import java.net.ProtocolException;
import java.net.URL;
import java.net.URLDecoder;

import java.security.Permission;

   * This avoids sending potentially sensitive data like HTTP cookies to the proxy unencrypted.
   *
   * In order to support preemptive authentication we pass a fake "Auth Failed" response to the
   * authenticator. This gives the authenticator the option to customize the CONNECT request. It can
   * decline to do so by returning null, in which case OkHttp will use it as-is.
   */
  @Throws(IOException::class)

        }
        return client.proxyAuthenticator.authenticate(route, userResponse)
      }

      HTTP_UNAUTHORIZED -> return client.authenticator.authenticate(route, userResponse)

      HTTP_PERM_REDIRECT, HTTP_TEMP_REDIRECT, HTTP_MULT_CHOICE, HTTP_MOVED_PERM, HTTP_MOVED_TEMP, HTTP_SEE_OTHER -> {
        return buildRedirectRequest(userResponse, method)
      }

=== ":material-language-kotlin: Kotlin"
    ```kotlin
      private val client = OkHttpClient.Builder()
          .authenticator(object : Authenticator {
            @Throws(IOException::class)
            override fun authenticate(route: Route?, response: Response): Request? {
              if (response.request.header("Authorization") != null) {