iTextSharp.text.pdf.PdfCopy.CopyObject C# (CSharp) Метод

        protected internal PdfObject CopyObject(PdfObject inp, bool keepStruct, bool directRootKidds)
        {
            if (inp == null)
                return PdfNull.PDFNULL;
            switch (inp.Type) {
                case PdfObject.DICTIONARY:
                    return CopyDictionary((PdfDictionary)inp, keepStruct, directRootKidds);
                case PdfObject.INDIRECT:
                    return CopyIndirect((PRIndirectReference)inp, keepStruct, directRootKidds);
                case PdfObject.ARRAY:
                    return CopyArray((PdfArray)inp, keepStruct, directRootKidds);
                case PdfObject.NUMBER:
                case PdfObject.NAME:
                case PdfObject.STRING:
                case PdfObject.NULL:
                case PdfObject.BOOLEAN:
                case 0:
                    return inp;
                case PdfObject.STREAM:
                    return CopyStream((PRStream)inp);
                    //                return in;
                default:
                    if (inp.Type < 0) {
                        String lit = ((PdfLiteral)inp).ToString();
                        if (lit.Equals("true") || lit.Equals("false")) {
                            return new PdfBoolean(lit);
                        }
                        return new PdfLiteral(lit);
                    }
                    return null;
            }
        }

        public void CopyStructTreeForPage(PdfNumber sourceArrayNumber, int newArrayNumber)
        {
            int documentHash = GetDocumentHash(reader);

            if (!openedDocuments.ContainsKey(documentHash))
            {
                openedDocuments.Add(documentHash, null);
                AddKid(structureTreeRoot, writer.CopyObject(structTreeRoot.Get(PdfName.K), true, true));
            }
            if (CopyPageMarks(parentTree, sourceArrayNumber, newArrayNumber) == returnType.NOTFOUND)
            {
                throw new BadPdfFormatException(MessageLocalization.GetComposedMessage("structparent.not.found"));
            }
        }