How to use the @salesforce/command.flags.builtin function in @salesforce/command

char: 'd',
      description: messages.getMessage('inputDirFlagDescription'),
      required: true
    }),
    mappingobjects: flags.array({
      char: 'm',
      description: messages.getMessage('mappingObjectsFlagDescription'),
      map: (value: string) => {
        const [ object, keyField = 'Name' ] = value.split(':');
        return { object, keyField };
      }
    }),
    deletebeforeload: flags.boolean({
      description: messages.getMessage('deleteBeforeLoadFlagDescription')
    }),
    verbose: flags.builtin()
  };

  // Comment this out if your command does not require an org username
  protected static requiresUsername = true;

  // Comment this out if your command does not support a hub org username
  protected static supportsDevhubUsername = false;

  // Set this to true if your command requires a project workspace; 'requiresProject' is false by default
  protected static requiresProject = false;

  /**
   *
   */
  public async run(): Promise {
    const inputDir = this.flags.inputdir;

json: flags.boolean({
      description: "show output in json format (disables --verbose && --csv)"
    }),
    csv: flags.boolean({
      description: "show output in csv format (disables --verbose)"
    }),
    depends: flags.boolean({
      description: "show dependency information for Apex classes"
    }),
    zombies: flags.boolean({
      description: "show class fields, properties & methods that are not being used"
    }),
    warnings: flags.boolean({
      description: "show warnings messages for legal but possibly faulty code "
    }),
    verbose: flags.builtin({
      description: "show progress messages"
    })
  };

  protected static requiresUsername = false;
  protected static supportsDevhubUsername = false;
  protected static requiresProject = false;

  public async run(): Promise {
    const json = this.flags.json || false;
    const csv = this.flags.csv || false;
    const depends = this.flags.depends || false;
    const zombies = this.flags.zombies || false;
    const warnings = this.flags.warnings || false;
    const verbose = this.flags.verbose || false;