docs: public void classifyAndWriteAnswersKBest(String testFile, int k,
                                         DocumentReaderAndWriter<IN> readerAndWriter)
      throws IOException
    {
      ObjectBank<List<IN>> documents =
        makeObjectBankFromFile(testFile, readerAndWriter);
      PrintWriter pw = IOUtils.encodedOutputStreamPrintWriter(System.out, "", true);
      classifyAndWriteAnswersKBest(documents, k, pw, readerAndWriter);
    }