Doctrine\ODM\MongoDB\Mapping\ClassMetadataFactory::setConfiguration PHP Method

    public function setConfiguration(Configuration $config)
    {
        $this->config = $config;
    }

 public function setUp()
 {
     parent::setUp();
     $this->factory = new ClassMetadataFactory();
     $this->factory->setDocumentManager($this->dm);
     $this->factory->setConfiguration($this->dm->getConfiguration());
 }