testEncodingWithCasing(base32(), "", "");
    testEncodingWithCasing(base32(), "f", "MY======");
    testEncodingWithCasing(base32(), "fo", "MZXQ====");
    testEncodingWithCasing(base32(), "foo", "MZXW6===");
    testEncodingWithCasing(base32(), "foob", "MZXW6YQ=");
    testEncodingWithCasing(base32(), "fooba", "MZXW6YTB");
    testEncodingWithCasing(base32(), "foobar", "MZXW6YTBOI======");
  }

   */
  public static BaseEncoding base64Url() {
    return BASE64_URL;
  }

  private static final BaseEncoding BASE32 =
      new StandardBaseEncoding("base32()", "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567", '=');

  /**
   * The "base32" encoding specified by <a href="http://tools.ietf.org/html/rfc4648#section-6">RFC
   * 4648 section 6</a>, Base 32 Encoding. (This is the same as the base 32 encoding from <a