How to specify order from the API

I'm looking at the [build docs](https://github.com/documentationjs/documentation/blob/master/docs/NODE_API.md#build) which contains an optional `args.order` property. This property is an array of strings or objects and is supposed to allow you to the sorting order of documentation.

I'm not able to figure out how to use this optional property to control order. Am I misunderstanding the documentation? Or is the documentation here perhaps outdated? Thanks in advance for any help you can provide!

* What version of documentation.js are you using?: 1.8.1
* How are you running documentation.js (on the CLI, Node.js API, Grunt, other?): Node.js API