iTextSharp.text.pdf.PdfReader.ReplaceNamedDestination C# (CSharp) Метод

        private bool ReplaceNamedDestination(PdfObject obj, Hashtable names) {
            obj = GetPdfObject(obj);
            int objIdx = lastXrefPartial;
            ReleaseLastXrefPartial();
            if (obj != null && obj.IsDictionary()) {
                PdfObject ob2 = GetPdfObjectRelease(((PdfDictionary)obj).Get(PdfName.DEST));
                Object name = null;
                if (ob2 != null) {
                    if (ob2.IsName())
                        name = ob2;
                    else if (ob2.IsString())
                        name = ob2.ToString();
                    if (name != null) {
                        PdfArray dest = (PdfArray)names[name];
                        if (dest != null) {
                            ((PdfDictionary)obj).Put(PdfName.DEST, dest);
                            SetXrefPartialObject(objIdx, obj);
                            return true;
                        }
                    }
                }
                else if ((ob2 = GetPdfObject(((PdfDictionary)obj).Get(PdfName.A))) != null) {
                    int obj2Idx = lastXrefPartial;
                    ReleaseLastXrefPartial();
                    PdfDictionary dic = (PdfDictionary)ob2;
                    PdfName type = (PdfName)GetPdfObjectRelease(dic.Get(PdfName.S));
                    if (PdfName.GOTO.Equals(type)) {
                        PdfObject ob3 = GetPdfObjectRelease(dic.Get(PdfName.D));
                        if (ob3 != null) {
                            if (ob3.IsName())
                                name = ob3;
                            else if (ob3.IsString())
                                name = ob3.ToString();
                        }
                        if (name != null) {
                            PdfArray dest = (PdfArray)names[name];
                            if (dest != null) {
                                dic.Put(PdfName.D, dest);
                                SetXrefPartialObject(obj2Idx, ob2);
                                SetXrefPartialObject(objIdx, obj);
                                return true;
                            }
                        }
                    }
                }
            }
            return false;
        }