public static function vendor()
    {
        self::checkVendor();
        $path = is_null(self::$root) ? 'vendor/autoload.php' : self::$root.'vendor/autoload.php';
        include_once $path;
    }
public static function vendor()
    {
        self::checkVendor();
        $path = is_null(self::$root) ? 'vendor/autoload.php' : self::$root.'vendor/autoload.php';
        include_once $path;
    }
public static function vendor ( ) { self :: checkVendor ( ) ; $ path = is_null ( self :: $ root ) ? 'vendor/autoload.php' : self :: $ root . 'vendor/autoload.php' ; include_once $ path ; }
call vendor.
call vendor .