}
    return fromBytesNoCopy(bytes);
  }

  private static int decode(char ch) {
    if (ch >= '0' && ch <= '9') {
      return ch - '0';
    }
    if (ch >= 'a' && ch <= 'f') {
      return ch - 'a' + 10;
    }
    throw new IllegalArgumentException("Illegal hexadecimal character: " + ch);
  }

  /**

        state = mark = si = 0;
        do {
            final char ch = arr[si];

            switch (state) {
            case 0:
                if (ch == ':') {
                    proto = str.substring(mark, si);
                    mark = si + 1;
                    state = 1;
                }
                break;
            case 1:
                if (ch == '\\') {
                    mark = si + 1;

            p++;
        }
        if (p == len) {
            return null;
        }

        /* collect server name */
        while (p < len && (ch = pathInfo.charAt(p)) != '/') {
            out[i] = ch;
            i++;
            p++;
        }
        while (p < len && pathInfo.charAt(p) == '/') {
            p++;
        }
        if (p < len) { /* then there must be a share */
            out[i] = '/';

        state = mark = si = 0;
        do {
            final char ch = arr[si];

            switch (state) {
            case 0:
                if (ch == ':') {
                    proto = str.substring(mark, si);
                    mark = si + 1;
                    state = 1;
                }
                break;
            case 1:
                if (ch == '\\') {
                    mark = si + 1;

        final StringBuilder buf = new StringBuilder(pattern.length());
        for (int i = 0; i < pattern.length(); ++i) {
            final char ch = pattern.charAt(i);
            if (Character.isLetterOrDigit(ch) || Character.isWhitespace(ch)) {
                buf.append(ch);
            }
        }
        if (buf.indexOf("yy") == -1) {
            final int pos = buf.indexOf("y");
            if (pos != -1) {

        for (final char ch : content) {
            switch (ch) {
            case '<':
                buf.append("&lt;");
                break;
            case '>':
                buf.append("&gt;");
                break;
            case '&':
                buf.append("&amp;");
                break;
            default:
                buf.append(ch);
            }
        }

        ImmutableBiMap.<String, String>builder()
            .put("CDN_LOOP", "CDN-Loop")
            .put("ETAG", "ETag")
            .put("SOURCE_MAP", "SourceMap")
            .put("SEC_CH_UA_WOW64", "Sec-CH-UA-WoW64")
            .put("SEC_WEBSOCKET_ACCEPT", "Sec-WebSocket-Accept")
            .put("SEC_WEBSOCKET_EXTENSIONS", "Sec-WebSocket-Extensions")
            .put("SEC_WEBSOCKET_KEY", "Sec-WebSocket-Key")

     * @param str
     *            the string to check
     * @param ch
     *            the character to find
     * @return true if the character is contained in the string, false otherwise
     */
    public static boolean contains(final String str, final char ch) {
        if (isEmpty(str)) {
            return false;
        }
        return str.indexOf(ch) >= 0;
    }

    /**

            for (int i = 0; i < s.length(); i++) {
                final char ch = s.charAt(i);
                if (ch == '\\' && i < s.length() - 1) {
                    i++;
                    sb.append(s.charAt(i));
                } else {
                    sb.append(ch);
                }
            }
            return sb.toString();
        }
        return s;
    }

            p++;
        }
        if (p == len) {
            return null;
        }

        /* collect server name */
        while (p < len && (ch = pathInfo.charAt(p)) != '/') {
            out[i] = ch;
            i++;
            p++;
        }
        while (p < len && pathInfo.charAt(p) == '/') {
            p++;
        }
        if (p < len) { /* then there must be a share */
            out[i] = '/';