iTextSharp.text.pdf.PdfReader.PageRefs.InsertPage C# (CSharp) Метод

            internal void InsertPage(int pageNum, PRIndirectReference refi) {
                --pageNum;
                if (refsn != null) {
                    if (pageNum >= refsn.Count)
                        refsn.Add(refi);
                    else
                        refsn.Insert(pageNum, refi);
                }
                else {
                    ++sizep;
                    lastPageRead = -1;
                    if (pageNum >= Size) {
                        refsp[Size] = refi.Number;
                    }
                    else {
                        IntHashtable refs2 = new IntHashtable((refsp.Size + 1) * 2);
                        for (IntHashtable.IntHashtableIterator it = refsp.GetEntryIterator(); it.HasNext();) {
                            IntHashtable.IntHashtableEntry entry = (IntHashtable.IntHashtableEntry)it.Next();
                            int p = entry.Key;
                            refs2[p >= pageNum ? p + 1 : p] = entry.Value;
                        }
                        refs2[pageNum] = refi.Number;
                        refsp = refs2;
                    }
                }
            }