iTextSharp.text.pdf.PdfCopyFieldsImp.SetVisited C# (CSharp) Метод

        protected internal bool SetVisited(PRIndirectReference refi)
        {
            IntHashtable refs;
            if (visited.TryGetValue(refi.Reader, out refs)) {
                int old = refs[refi.Number];
                refs[refi.Number] = 1;
                return (old != 0);
            }
            else
                return false;
        }