code: public function init()
      {
          parent::init();
          if ($this->enableCoreCommands) {
              foreach ($this->coreCommands() as $id => $command) {
                  if (!isset($this->controllerMap[$id])) {
                      $this->controllerMap[$id] = $command;
                  }
              }
          }
          // ensure we have the 'help' command so that we can list the available commands
          if (!isset($this->controllerMap['help'])) {
              $this->controllerMap['help'] = 'yii\console\controllers\HelpController';
          }
      }
docs: Initialize the application.