iTextSharp.text.pdf.FdfWriter.GetField C# (CSharp) Метод

        public String GetField(String field)
        {
            Dictionary<String, Object> map = fields;
            StringTokenizer tk = new StringTokenizer(field, ".");
            if (!tk.HasMoreTokens())
                return null;
            while (true) {
                String s = tk.NextToken();
                Object obj;
                map.TryGetValue(s, out obj);
                if (obj == null)
                    return null;
                if (tk.HasMoreTokens()) {
                    if (obj is Dictionary<String, Object>)
                        map = (Dictionary<String, Object>)obj;
                    else
                        return null;
                }
                else {
                    if (obj is Dictionary<String, Object>)
                        return null;
                    else {
                        if (((PdfObject)obj).IsString())
                            return ((PdfString)obj).ToUnicodeString();
                        else
                            return PdfName.DecodeName(obj.ToString());
                    }
                }
            }
        }