code: public static PSetupGuess guessSetup(byte [] bits){
      InputStream is = new ByteArrayInputStream(bits);
      XlsParser p = new XlsParser();
      CustomInspectDataOut dout = new CustomInspectDataOut();
      try{p.streamParse(is, dout);}catch(Exception e){}
      return new PSetupGuess(new ParserSetup(ParserType.XLS,CsvParser.AUTO_SEP,dout._ncols, dout._header,dout._header?dout.data()[0]:null,false),dout._nlines,dout._invalidLines,dout.data(),dout._nlines > dout._invalidLines,null);
    }
docs: Try to parse the bits as svm light format, return SVMParser instance if the input is in svm light format, null otherwise.
  @param bits
  @return SVMLightPArser instance or null