code: protected function loadAnswerMatching()
      {
          if ($this->input->hasOption('load-choice-matching')) {
              $fs = new Filesystem();
              $filename = $this->input->getOption('load-choice-matching');
  
              if (!$fs->exists($filename)) {
                  $this->logger->warning("The file $filename is not found. Choice matching not loaded");
              } else {
                  $this->logger->debug("Loading $filename as choice matching");
                  $this->cacheAnswersMapping = \json_decode(\file_get_contents($filename), true);
              }
          }
      }
docs: Load the mapping between answer in CSV and value in choices from a json file