iTextSharp.text.pdf.PdfStamperImp.GetUnderContent C# (CSharp) Method

        internal PdfContentByte GetUnderContent(int pageNum)
        {
            if (pageNum < 1 || pageNum > reader.NumberOfPages)
                return null;
            PageStamp ps = GetPageStamp(pageNum);
            if (ps.under == null)
                ps.under = new StampContent(this, ps);
            return ps.under;
        }