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

        internal static String GetSubsetPrefix(PdfDictionary dic) {
            if (dic == null)
                return null;
            String s = GetFontName(dic);
            if (s == null)
                return null;
            if (s.Length < 8 || s[6] != '+')
                return null;
            for (int k = 0; k < 6; ++k) {
                char c = s[k];
                if (c < 'A' || c > 'Z')
                    return null;
            }
            return s;
        }