Asset targets are lazily evaluated as they are fetched from the collection By using get() an AssetTarget and its dependent files will be created and verified.
Inheritance: implements Countabl\Countable, implements Iterato\Iterator
 public function testGet()
 {
     $collection = new AssetCollection(['libs.js', 'all.css'], $this->factory);
     $this->assertNull($collection->get('nope.js'));
     $this->assertInstanceOf('MiniAsset\\AssetTarget', $collection->get('libs.js'));
 }