code: public function setDefaults($defaultController = 'Index', $defaultAction = 'index')
      {
          $this->defaultController = $defaultController;
          $this->defaultAction = $defaultAction;
          
          return $this;
      }
docs: Set the default controller and action
  
  @param string $defaultController
  The default controller name if nothing is provided by request
  @param string $defaultAction
  The default action name if nothing is provided by request
  @return Application Current application instance