code: protected void addExtraOptions(ArgOptions options) {
          super.addExtraOptions(options);
  
          options.addOption('H', "usePartsOfSpeech",
                            "If provided, parts of speech will be used as part " +
                            "of the word occurrence features.", 
                            false, null, "Optional");
          options.addOption('O', "useWordOrdering",
                            "If provided, parts of speech will be used as part " +
                            "of the word occurrence features.", 
                            false, null, "Optional");
      }
docs: {@inheritDoc}