emberjs/ember.js — pull request #9556 by lsthornt (2014-11-12 19:29:28+00:00)
Title: [FEATURE ember-metal-get-properties-rename-keys] Allow keys to be renamed in the object returned by getProperties

In a number of places in our application, we call `getProperties` but end up having to rename the keys of the object that is returned. I figured throwing out some failing tests to demonstrate the syntax would be the easiest way to get feedback on whether this feature is desirable or not.