Another package port

What is the appropriate replacement for Loader::library and Loader::model (I assume this one just goes away)? See below:

namespace Concrete\Package\EasyNews;
defined('C5_EXECUTE') or die(_("Access Denied."));
use Concrete\Core\Block\BlockType\BlockType;
use Concrete\Core\Attribute\Key\CollectionKey as CollectionAttributeKey;
use Concrete\Core\Page\Single as SinglePage;
use Loader;
class Controller extends \Concrete\Core\Package\Package {
   protected $pkgHandle = 'easy_news';
   protected $appVersionRequired = '5.7.0';
   protected $pkgVersion = '1.3.0';
   function __construct(){
      Loader::library('controller',$this->pkgHandle); //Used by controllers
      Loader::library('dashboardcontroller',$this->pkgHandle); //Used by controllers
   public function getPackageDescription() {

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zianadir replied on at Permalink Reply
Can you update this plugin? I need this plugin in 5.7.3 version. Can you help me.