public static function copyPackage($package_file, $tmp)
    {
        $package_file = realpath($package_file);

        if (file_exists($package_file)) {
            $filename = basename($package_file);
            Folder::create($tmp);
            copy(realpath($package_file), $tmp . DS . $filename);
            return $tmp . DS . $filename;
        }

        return null;
    }