BaseManager::initClassesList

static function initClassesList()
{
	if (static::$isInit === true)
		return;

	$result = static::getBuildInExtraServices();
	Loader::registerAutoLoadClasses('sale', $result);

	$event = new Event('sale', static::getEventName());
	$event->send();

	foreach ($event->getParameters() as $class)
	{
		Loader::registerAutoLoadClasses(null, $class);
	}

	static::$isInit = true;
}