docs: public List<List<List<String>>> getRecordsAsString() {
          if(records == null)
              Collections.emptyList();
          List<List<List<String>>> ret = new ArrayList<>(records.size());
          for(List<BatchCSVRecord> record : records) {
              List<List<String>> add = new ArrayList<>();
              for(BatchCSVRecord batchCSVRecord : record) {
                  for (SingleCSVRecord singleCSVRecord : batchCSVRecord.getRecords()) {
                      add.add(singleCSVRecord.getValues());
                  }
              }
  
              ret.add(add);
          }
  
          return ret;
      }