private function save()
 {
     $this->config->set_site_key($this->form->get_value('site_key'));
     $this->config->set_secret_key($this->form->get_value('secret_key'));
     ReCaptchaConfig::save();
 }
 public function __construct()
 {
     require_once PATH_TO_ROOT . '/ReCaptcha/lib/recaptchalib.php';
     $this->config = ReCaptchaConfig::load();
     $this->is_recaptcha_v2 = $this->config->get_site_key() && $this->config->get_secret_key();
 }