private String toStringLongMode() {
        final StringBuilder sb = new StringBuilder();
        sb.append("LongRec size=");
        sb.append(Util.getLong(_bytes, Buffer.LONGREC_SIZE_OFFSET));
        sb.append(" page=");
        sb.append(Util.getLong(_bytes, Buffer.LONGREC_PAGE_OFFSET));
        return sb.toString();
    }