From: Tab Atkins Jr. [mailto:jackalm...@gmail.com]
> That helps when you've *already* run findAll() once, and need to run it again
> on the results, but it doesn't help at all when you're starting with a set of
> elements, unless we perhaps make a constructable NodeList and force people to
> pass their array through that first.
I believe the idea would be
```js
Elements.from(parents).select("selector")
// instead of
document.select("selector", parents)
```
For the single-element case, it would be
```js
parent.select("selector")
// instead of
document.select("selector", parent)
```
