class GetVisitorProfilePopup extends \Piwik\Plugin\Widget
{
    public static function configure(WidgetConfig $config)
    {
        $config->setCategory('Live!');
        $config->setName('Live_VisitorProfile');
        $config->setOrder(25);
        $config->disable();
    }

    public function render()
    {
    }

    public static function configureWidgetsList(WidgetsList $widgetsList)
    {
        // only needed in rare cases when removing a widget or so
    }

}

$config = new WidgetConfig();
$config->setCategory('Live!');
$config->setName(Piwik::translate('UserCountryMap_RealTimeMap'));
$config->setModule('UserCountryMap');
$config->setAction('realtimeMap');
$config->setOrder(5);
WidgetsList::getInstance()->addWidget($config);

// instead of 
WidgetsList::add('Live!', Piwik::translate('UserCountryMap_RealTimeMap'), 'UserCountryMap', 'realtimeMap', array(), $order = 5);

    protected function init()
    {
        parent::init();
        $this->order = 2;

        $this->createWidget()
             ->setName('Live_VisitorLog')
             ->setOrder(10)
             ->setParameters(array('small' => 1));
    }