* @param pageNum the page number. 1 is the first
     * @param compressionLevel the compressionLevel
     * @since	2.1.3	(the method already existed without param compressionLevel)
     */
    public void setPageContent(final int pageNum, final byte content[], final int compressionLevel) {
        PdfDictionary page = getPageN(pageNum);
        if (page == null)
            return;
        PdfObject contents = page.get(PdfName.CONTENTS);
        freeXref = -1;
        killXref(contents);
        if (freeXref == -1) {
            xrefObj.add(null);
            freeXref = xrefObj.size() - 1;
        }
        page.put(PdfName.CONTENTS, new PRIndirectReference(this, freeXref));
        xrefObj.set(freeXref, new PRStream(this, content, compressionLevel));
    }