container.lookup deprecation alternative?

Ever since ember 1.12 i get a deprecation notice for this line of code. Which sits in a component not an initializer.

this.container.lookup('application:main');

Notice:

DEPRECATION: lookup was called on a Registry. The initializer API no longer receives a container, and you should use an instanceInitializer to look up objects from the container. See http://ift.tt/1KNHHU9 for more details.

What other way is there to get a hold of the main application container?