code: public static ParseSetup guessSetup(byte [] bits) {
      int lastNewline = bits.length-1;
      while(lastNewline > 0 && !CsvParser.isEOL(bits[lastNewline]))lastNewline--;
      if(lastNewline > 0) bits = Arrays.copyOf(bits,lastNewline+1);
      SVMLightParser p = new SVMLightParser(new ParseSetup(SVMLight_INFO,
              ParseSetup.GUESS_SEP, false,ParseSetup.GUESS_HEADER,ParseSetup.GUESS_COL_CNT,
              null,null,null,null,null), null);
      SVMLightInspectParseWriter dout = new SVMLightInspectParseWriter();
      p.parseChunk(0,new ByteAryData(bits,0), dout);
      if (dout._ncols > 0 && dout._nlines > 0 && dout._nlines > dout._invalidLines)
        return new ParseSetup(SVMLight_INFO, ParseSetup.GUESS_SEP,
              false,ParseSetup.NO_HEADER,dout._ncols,null,dout.guessTypes(),null,null,dout._data, dout.removeErrors());
      else throw new ParseDataset.H2OParseException("Could not parse file as an SVMLight file.");
    }
docs: Try to parse the bytes as svm light format, return a ParseSetupHandler with type
  SVMLight if the input is in svm light format, throw an exception otherwise.