/**
* @param string|null $path
* @param array|null $serviceList
*
* @return self::$instance
*/
public static function getInstance($path = null, $serviceList = null)
{
if (!self::$instance instanceof self) {
self::$instance = new self($path, $serviceList);
}
if ($path) {
self::$instance->loadServiceFromFile($path);
}
if ($serviceList) {
self::$instance->setServiceList($serviceList);
}
return self::$instance;
}
