docs: @Override
      protected HashMap readFile(HashMap brMap) throws IOException {
          HashMap ret = new HashMap();
          HashMap metaData = new HashMap();
          ArrayList<HashMap> culArr = readCultivarData(brMap, metaData);
  //        compressData(sites);
          ArrayList<HashMap> expArr = new ArrayList();
          HashMap tmp = new HashMap();
          HashMap tmp2 = new HashMap();
          tmp.put(jsonKey, tmp2);
          tmp2.put(dataKey, culArr);
          expArr.add(tmp);
          ret.put("experiments", expArr);
  
          return ret;
      }