code: @Override
      public DataModelIF<Long, Long> parseData(final File f) throws IOException {
          DataModelIF<Long, Long> dataset = DataModelFactory.getDefaultModel();
  
          BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(f), "UTF-8"));
          try {
              String line = null;
              while ((line = br.readLine()) != null) {
                  parseLine(line, dataset);
              }
          } finally {
              br.close();
          }
  
          return dataset;
      }
docs: {@inheritDoc}