}

  public void testBase64Url() {
    testDecodesByBytes(base64Url(), "_zzz", new byte[] {-1, 60, -13});
    testDecodesByBytes(base64Url(), "-zzz", new byte[] {-5, 60, -13});
  }

  public void testBase64UrlInvalidDecodings() {
    assertFailsToDecode(base64Url(), "+zzz", "Unrecognized character: +");
    assertFailsToDecode(base64Url(), "/zzz", "Unrecognized character: /");
  }

  public void testBase32() {

  }

  public void testBase64Url() {
    testDecodesByBytes(base64Url(), "_zzz", new byte[] {-1, 60, -13});
    testDecodesByBytes(base64Url(), "-zzz", new byte[] {-5, 60, -13});
  }

  public void testBase64UrlInvalidDecodings() {
    assertFailsToDecode(base64Url(), "+zzz", "Unrecognized character: +");
    assertFailsToDecode(base64Url(), "/zzz", "Unrecognized character: /");
  }

  public void testBase32() {

   */
  public static BaseEncoding base64() {
    return BASE64;
  }

  private static final BaseEncoding BASE64_URL =
      new Base64Encoding(
          "base64Url()", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_", '=');

  /**
   * The "base64url" encoding specified by <a
   * href="http://tools.ietf.org/html/rfc4648#section-5">RFC 4648 section 5</a>, Base 64 Encoding

            url.newBuilder()
              .addQueryParameter("hostname", hostname).build(),
          )
          .post(query.toRequestBody(DNS_MESSAGE))
      } else {
        val encoded = query.base64Url().replace("=", "")
        val requestUrl = url.newBuilder().addQueryParameter("dns", encoded).build()

        url(requestUrl)
      }
    }.build()

  class Builder {

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

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

    protected static final String OIC_AUTH_SERVER_URL = "oic.auth.server.url";

    protected static final String OIC_CLIENT_ID = "oic.client.id";

		}
		scopeInfos = append(scopeInfos, si)
	}
	return scopeInfos, nil
}

type ControlzClient struct {
	baseURL    *url.URL
	httpClient *http.Client
}

func (c *ControlzClient) GetScopes() ([]*ScopeInfo, error) {
	var scopeInfos []*ScopeInfo
	resp, err := c.httpClient.Get(c.baseURL.String())
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {

        final String[] path = referenceClass.getName().split("\\.");
        String baseUrl = url.toExternalForm();
        for (final String element : path) {
            final int pos = baseUrl.lastIndexOf('/');
            baseUrl = baseUrl.substring(0, pos);
        }
        return getTraverser(URLUtil.create(baseUrl + '/'), null, null);
    }

    /**

    protected String normalizeCanonicalUrl(final String baseUrl, final String canonicalUrl) {
        try {
            final URL u = new URL(baseUrl);
            return new URL(u, canonicalUrl.startsWith(":") ? u.getProtocol() + canonicalUrl : canonicalUrl).toString();
        } catch (final MalformedURLException e) {
            logger.warn("Invalid canonical url: {} : {}", baseUrl, canonicalUrl, e);
        }
        return null;
    }

		readDirFn(pathJoin(drivePath, minioMetaMultipartBucket, shaDir), func(uploadIDDir string, typ os.FileMode) error {
			uploadIDPath := pathJoin(shaDir, uploadIDDir)
			var modTime time.Time
			// Upload IDs are of the form base64_url(<UUID>x<UnixNano>), we can extract the time from the UUID.
			if b64, err := base64.RawURLEncoding.DecodeString(uploadIDDir); err == nil {
				if split := strings.Split(string(b64), "x"); len(split) == 2 {