Inheritance: extends Assetic\FilterManager, implements Zend\ServiceManager\ServiceLocatorAwareInterface
 /**
  * @dataProvider getAliasGetValidProvider
  */
 public function testGetValid($alias, $object)
 {
     $this->assertInstanceOf('Assetic\\Filter\\FilterInterface', $object);
     $this->service->setService($alias, $object);
     $result = $this->object->get($alias);
     $this->assertInstanceOf('Assetic\\Filter\\FilterInterface', $result);
     $this->assertSame($result, $object);
 }