pocketmine\Thread::registerClassLoader PHP Method

    public function registerClassLoader()
    {
        if (!interface_exists("ClassLoader", false)) {
            require \pocketmine\PATH . "src/spl/ClassLoader.php";
            require \pocketmine\PATH . "src/spl/BaseClassLoader.php";
            require \pocketmine\PATH . "src/pocketmine/CompatibleClassLoader.php";
        }
        if ($this->classLoader !== null) {
            $this->classLoader->register(true);
        }
    }