Constructor.
AssetFactory $factory The asset factory:
array $loaders An array of loaders indexed by alias:
public function __construct(AssetFactory $factory, $loaders = array()) {
  $this->factory = $factory;
  $this->loaders = array();
  $this->resources = array();
  $this->formulae = array();
  $this->loaded = false;
  $this->loading = false;
  foreach ($loaders as $alias => $loader) {
    $this
      ->setLoader($alias, $loader);
  }
}