code: public int GetLineLengthUtf32() {
          int total = 0;
          for (Iterator i = line.iterator(); i.hasNext();) {
              total += ((PdfChunk)i.next()).lengthUtf32();
          }
          return total;
      }
docs: Returns the length of a line in UTF32 characters
  @return	the length in UTF32 characters
  @since	2.1.2