code: private void writeSingleExp(String arg0, Map result, DssatCommonOutput output, String file) {
          futFiles.put(file, executor.submit(new DssatTranslateRunner(output, result, arg0)));
      }
docs: Write files and add file objects in the array
  
  @param arg0 file output path
  @param result data holder object
  @param output DSSAT translator object
  @param file Generated DSSAT file identifier