Method _getHelpOption

lib/command.js:2606–2612

* Lazy create help option. * Returns null if has been disabled with .helpOption(false). * * @returns {(Option | null)} the help option * @package

()

   * @package
   */
  _getHelpOption() {
    // Lazy create help option on demand.
    if (this._helpOption === undefined) {
      this.helpOption(undefined, undefined);
    }
    return this._helpOption;
  }

  /**
   * Supply your own option to use for the built-in help option.