code: private void loadParsevalParameters() {
      this.parsevalParser.addArgument("-l", "--language").required(true)
          .choices("ca", "de", "en", "es", "eu", "fr", "it")
          .help("Choose language.\n");
      this.parsevalParser.addArgument("-m", "--model").required(false)
          .setDefault(Flags.DEFAULT_EVALUATE_MODEL)
          .help("Pass the model to evaluate as a parameter.\n");
      this.parsevalParser.addArgument("-t", "--testset").required(true)
          .help("The test or reference corpus.\n");
      this.parsevalParser.addArgument("--clearFeatures").required(false)
          .choices("yes", "no", "docstart").setDefault(Flags.DEFAULT_FEATURE_FLAG)
          .help("Reset the adaptive features; defaults to 'no'.\n");
    }
docs: Create the parameters available for evaluation.