BaseClassLoader::register PHP Method

    public function register($prepend = false)
    {
        spl_autoload_register([$this, "loadClass"], true, $prepend);
    }

 public function run()
 {
     if (!interface_exists("ClassLoader", false)) {
         require \pocketmine\PATH . "src/spl/ClassLoader.php";
     }
     if (!class_exists("BaseClassLoader", false)) {
         require \pocketmine\PATH . "src/spl/BaseClassLoader.php";
     }
     $autoloader = new \BaseClassLoader();
     $autoloader->addPath(\pocketmine\PATH . "src");
     $autoloader->register(true);
 }