code: def __get_options(self, rouge_args=None):
          
          if self.args:
              options = self.args.split()
          elif rouge_args:
              options = rouge_args.split()
          else:
              options = [
                  '-e', self._data_dir,
                  '-c', 95,
                  '-2',
                  '-1',
                  '-U',
                  '-r', 1000,
                  '-n', 4,
                  '-w', 1.2,
                  '-a',
                  ]
              options = list(map(str, options))
  
          options = self.__add_config_option(options)
          return options
docs: Get supplied command line arguments for ROUGE or use default
          ones.