How do you enable retina in cocos2d-2.0-x-2.0.4

Hi,
I want to enable or disable retina mode in my brandnew cocos2d-x project.
I couldnot find CCDirector::sharedDirector()~~>enableRetinaDisplay;
What is the other way of doing it
Thanks,
~~Shakthi

You should read update changelog.

Retina is enabled by default. If your device can handle it.
http://www.cocos2d-x.org/news/77

Sorry and thanks.
I am new to cocos2d-x.

Best answer:
http://www.cocos2d-x.org/projects/cocos2d-x/wiki/Multi_resolution_support