iTextSharp.text.pdf.PdfStructureTreeRoot.MapClass C# (CSharp) Метод

        public void MapClass(PdfName name, PdfObject obj)
        {
            if (classMap == null) {
                classMap = new PdfDictionary();
                classes = new Dictionary<PdfName, PdfObject>();
            }
            classes.Add(name,obj);
        }

 internal void AddClass(PdfObject obj)
 {
     obj = GetDirectObject(obj);
     if (obj.IsDictionary())
     {
         PdfObject curClass = ((PdfDictionary)obj).Get(PdfName.C);
         if (curClass == null)
         {
             return;
         }
         if (curClass.IsArray())
         {
             PdfArray array = (PdfArray)curClass;
             for (int i = 0; i < array.Size; ++i)
             {
                 AddClass(array[i]);
             }
         }
         else if (curClass.IsName())
         {
             AddClass(curClass);
         }
     }
     else if (obj.IsName())
     {
         PdfName name = (PdfName)obj;
         if (sourceClassMap == null)
         {
             obj = GetDirectObject(structTreeRoot.Get(PdfName.CLASSMAP));
             if (obj == null || !obj.IsDictionary())
             {
                 return;
             }
             sourceClassMap = (PdfDictionary)obj;
         }
         obj = GetDirectObject(sourceClassMap.Get(name));
         if (obj == null)
         {
             return;
         }
         PdfObject put = structureTreeRoot.GetMappedClass(name);
         if (put != null)
         {
             if (!CompareObjects(put, obj))
             {
                 throw new BadPdfFormatException(MessageLocalization.GetComposedMessage("conflict.in.classmap", name));
             }
         }
         else
         {
             if (obj.IsDictionary())
             {
                 structureTreeRoot.MapClass(name, GetDirectDict((PdfDictionary)obj));
             }
             else if (obj.IsArray())
             {
                 structureTreeRoot.MapClass(name, GetDirectArray((PdfArray)obj));
             }
         }
     }
 }