assertFalse(renewed, "renewCredentials should return false when NtlmAuthenticator.getDefault() is null");
            assertEquals(mockCredentials, wrapper.getCredentials(),
                    "Credentials should remain unchanged if NtlmAuthenticator.getDefault() is null");
            mockedNtlmAuthenticator.verify(NtlmAuthenticator::getDefault);

    }
  }

  companion object {
    private val DEFAULT_PROXY_SELECTOR = ProxySelector.getDefault()
    private val DEFAULT_COOKIE_HANDLER = CookieManager.getDefault()
    private val DEFAULT_RESPONSE_CACHE = ResponseCache.getDefault()
  }

        return toDate(src, null, LocaleUtil.getDefault());
    }

    /**
     * Converts an object to {@link Date}.
     *
     * @param src the source object
     * @param pattern the pattern string
     * @return the converted {@link Date}
     */
    public static Date toDate(final Object src, final String pattern) {
        return toDate(src, pattern, LocaleUtil.getDefault());
    }

    /**

    val tlsSpec =
      ConnectionSpec
        .Builder(true)
        .tlsVersions(TlsVersion.TLS_1_2)
        .supportsTlsExtensions(false)
        .build()
    val socket = SSLSocketFactory.getDefault().createSocket() as SSLSocket
    socket.enabledCipherSuites =
      arrayOf(
        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256.javaName,
        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA.javaName,

     *
     * @return the pattern string for {@link DateFormat#SHORT} style
     */
    public static String getShortPattern() {
        return getShortPattern(LocaleUtil.getDefault());
    }

    /**
     * Returns the pattern string for {@link DateFormat#SHORT} style in the specified locale.
     *
     * @param locale
     *            Locale. Must not be {@literal null}.

     *
     * @return the pattern string for {@link DateFormat#SHORT} style
     */
    public static String getShortPattern() {
        return getShortPattern(LocaleUtil.getDefault());
    }

    /**
     * Returns the pattern string for {@link DateFormat#SHORT} style using the specified locale.
     *
     * @param locale
     *            Locale. Must not be {@literal null}.

                () -> {
                  throw new IOException("unrecognized FileSystem type " + FileSystems.getDefault());
                };
      }
    }

    private static PermissionSupplier userPermissions() {
      try {
        UserPrincipal user =
            FileSystems.getDefault()
                .getUserPrincipalLookupService()
                .lookupPrincipalByName(getUsername());

    }

    @Test
    void testLocaleIndependent() {
        Locale orig = Locale.getDefault();
        Locale[] locales = {Locale.ENGLISH, new Locale("tr"), Locale.getDefault()};
        try {
            for (Locale locale : locales) {
                Locale.setDefault(locale);
                checkVersionsEqual("1-abcdefghijklmnopqrstuvwxyz", "1-ABCDEFGHIJKLMNOPQRSTUVWXYZ");
            }

        TimeZone original = TimeZone.getDefault();
        try {
            TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
            ServerMessageBlock.writeUTime(unixTime * 1000L, buffer, 0);
            long readTime = ServerMessageBlock.readUTime(buffer, 0);
            assertEquals(unixTime * 1000L, readTime);
        } finally {
            TimeZone.setDefault(original);
        }
    }

    @Test

    mockWebServer.serverSocketFactory = ServerSocketFactory.getDefault()
    val url: HttpUrl = mockWebServer.url("")
    mockWebServer.bodyLimit = 0L
    mockWebServer.protocolNegotiationEnabled = false
    mockWebServer.protocols = listOf()
    val protocols: List<Protocol> = mockWebServer.protocols
    mockWebServer.useHttps(SSLSocketFactory.getDefault() as SSLSocketFactory, false)
    mockWebServer.noClientAuth()