@Override
  public InterpreterResult interpret(String q, InterpreterContext arg1) {
// test SVG return
    File svgSample = new File(FULLPATH+"/resources/resultSample.svg");
    StringBuffer buf = new StringBuffer();
    try (LineNumberReader reader = new LineNumberReader(new FileReader(svgSample))) {
      String line = null;
      while ((line = reader.readLine()) != null) buf.append(line);
    } catch (IOException e) {
      return new InterpreterResult(InterpreterResult.Code.ERROR, String.format("Error svg", q, results));
    }
    return new InterpreterResult(InterpreterResult.Code.SUCCESS, InterpreterResult.Type.SVG, buf.toString());
}