Uncertain type detection.

Hi,

Given the following code, my current inspection profiles in phpstorm don't pick up any issues:

```php
$wrapper2 = ['foo'=>['bar'=>[]]];
foreach($wrapper2 as $item){ 
  $item::foobar();
}
```

Is there an inspection setting that anyone knows of that would notify me of the fact that PHPStorm is uncertain if $item is an object, or if it has the ::foobar() method?