BaseClassLoader::addPath PHP Method

    public function addPath($path, $prepend = false)
    {
        foreach ($this->lookup as $p) {
            if ($p === $path) {
                return;
            }
        }
        if ($prepend) {
            $this->synchronized(function ($path) {
                $entries = $this->getAndRemoveLookupEntries();
                $this->lookup[] = $path;
                foreach ($entries as $entry) {
                    $this->lookup[] = $entry;
                }
            }, $path);
        } else {
            $this->lookup[] = $path;
        }
    }

 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->addPath(\pocketmine\PATH . "src" . DIRECTORY_SEPARATOR . "spl");
     $autoloader->register(true);
 }