Inheritance: implements Zend\ServiceManager\FactoryInterface
 public function testConstruct()
 {
     $serviceManager = new ServiceManager();
     $serviceManager->setService('Config', array('asset_manager' => array('filters' => array('css' => array('filter' => 'Lessphp')))));
     $serviceManager->setService('AssetManager\\Service\\MimeResolver', new MimeResolver());
     $t = new AssetFilterManagerServiceFactory($serviceManager);
     $service = $t->createService($serviceManager);
     $this->assertTrue($service instanceof AssetFilterManager);
 }