public void testSeparatorsExplicitly() {
    testEncodes(base64().withSeparator("\n", 3), "foobar", "Zm9\nvYm\nFy");
    testEncodes(base64().withSeparator("$", 4), "foobar", "Zm9v$YmFy");
    testEncodes(base32().withSeparator("*", 4), "foobar", "MZXW*6YTB*OI==*====");
  }

  public void testSeparatorSameAsPadChar() {
    assertThrows(IllegalArgumentException.class, () -> base64().withSeparator("=", 3));

    assertThrows(

    public BaseEncoding omitPadding() {
      return delegate.omitPadding().withSeparator(separator, afterEveryChars);
    }

    @Override
    public BaseEncoding withPadChar(char padChar) {
      return delegate.withPadChar(padChar).withSeparator(separator, afterEveryChars);
    }

    @Override
    public BaseEncoding withSeparator(String separator, int afterEveryChars) {

    private static final Logger logger = LogManager.getLogger(OpenIdConnectAuthenticator.class);

    private static final BaseEncoding BASE64_DECODER = BaseEncoding.base64().withSeparator("\n", 64);

    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";