I was checking out the Google I/O app source code in Android studio, and I came across this IDE layout of the `res/` folder - how was this achieved?

But if I look at my filesystem at the actual file structure, it's the conventional `values/styles.xml`, `values-v17/styles.xml`, `values-v21/styles.xml` arrangement. How can I achieve this in my own app?

![http://i.imgur.com/OBaBnWr.png](https://i.stack.imgur.com/8y6We.png)