Barryvdh\TranslationManager\Controller::postAdd PHP Method

    public function postAdd(Request $request)
    {
        $keys = explode("\n", $request->get('keys'));
        $groups = func_get_args();
        array_shift($groups);
        // remove the $request
        $group = implode('/', $groups);
        foreach ($keys as $key) {
            $key = trim($key);
            if ($group && $key) {
                $this->manager->missingKey('*', $group, $key);
            }
        }
        return redirect()->back();
    }