Ako ziskat instanciu anonymnej sluzby definovanej cez alias v neone

Caute, robim si rozsirenie, kroremu predam cez alias rozne anonymne sluzby :

services:
	- WpTemplate\MyTemplate

extensions:
	wpApplication: WpApplication\DI\WpApplicationExtension

wpApplication:
	setup:
		WpTemplate: @WpTemplate\MyTemplate

V DI containeru mi vygeneruje sluzbu 20_WpTemplate_WpTemplate: WpTemplate\WpTemplate

Potrebujem zistit ci sluzba implementuje clas, problem je ze neviem ziskat sluzbu z containeru lebo je anonymna poznam len @WpTemplate\WpTemplate. Neviete mi poradit ako to riesit? Ono uvazujem ze budem predavat aj neanonymne sluzby cez alias, aj priamo definovane sluzby do parametra setup. Tieto varianty si uz viem vyriesit, ale anonymnu sluzbu predavanu cez alias neviem.
Este chcem pridat v reale to overovabie robim az v beforeCompile, tu som to dal koi prikladu priamo do loadConfiguration.

class WpApplicationExtension extends CompilerExtension
{
	/** @var array */
	public $defaults = array(
		'setup' => array(),
	)

	public function loadConfiguration()
	{
		$builder = $this->getContainerBuilder();
		$config = $this->getConfig($this->defaults);
		$this->prepareServices($config['setup']);
	}

	protected function prepareServices($services)
	{
		$builder = $this->getContainerBuilder();
		foreach ($services as $key => $class) {
			if (Strings::startsWith($class, '@')) {
				$class = substr($class, 1);

				// v $key mam >> WpTemplate
				// v $class mam >> WpTemplate\WpTemplate
				// takze neviem ziskat getDefinition() kedze poznam len clasu a alias
				$class = $builder->getDefinition($key)->class ? : $builder->getDefinition($key)->factory->entity;


				if (!in_array('WpApplication\IWpSetUp', class_implements($class))) {
					throw new InvalidStateException("Service '$class' must implement WpApplication\IWpSetUp.");
				}
			}
		}
	}

}

instanciu potrebujem aj preto lebo v dalsom procese predam sluzby dalsej sluzbe kde budem na nich spustat na sluzbe nejaku metodu:

	$class = $this->container->getService($name);
	$class->run();

Editoval duskohu (11. 1. 2014 21:28)