// no vector register is larger than 512 bytes for now
	const maxLength = 512
	a := make([]byte, maxLength)
	b := make([]byte, maxLength)
	// randomish but deterministic data. No 0 or 255.
	for i := 0; i < maxLength; i++ {
		a[i] = byte(1 + 31*i%254)
		b[i] = byte(1 + 31*i%254)
	}
	for i := 2; i <= maxLength; i <<= 1 {
		for j := 0; j < i-1; j++ {
			a[j] = b[j] - 1
			a[j+1] = b[j+1] + 1

     * @param maxLength The maximum content length in bytes
     * @throws CrawlerSystemException if the MIME type is blank or maxLength is negative
     */
    public void addMaxLength(final String mimeType, final long maxLength) {
        if (StringUtil.isBlank(mimeType)) {
            throw new CrawlerSystemException("MIME type is a blank.");
        }
        if (maxLength < 0) {