Piwik\Widget\WidgetConfig::setAction PHP Method

    public function setAction($action)
    {
        $this->action = $action;
        return $this;
    }

 public static function configure(WidgetConfig $config)
 {
     $config->setCategoryId('General_Visitors');
     $config->setSubcategoryId('UserCountry_SubmenuLocations');
     $config->setName('UserCountryMap_VisitorMap');
     $config->setAction('visitorMap');
     $config->setOrder(1);
 }