Question/feature: access DI through ADR?

It would be convenient in a few cases if I could call Aura DI methods through the ADR object, like I can with the route methods.  I'm imagining something like this:
```php
$adr->di->values[$key] = $val;
// or
$gateway = $adr->di->lazyGet('cxj/db:gateway');
```
Maybe it already exists?  I could not find it, however.