code: public function resendToken(Contao\DataContainer $dc)
  	{
  		$model = Contao\OptInModel::findByPk($dc->id);
  
  		Contao\System::getContainer()->get('contao.opt-in')->find($model->token)->send();
  		Contao\Message::addConfirmation(sprintf($GLOBALS['TL_LANG']['MSC']['resendToken'], $model->email));
  		Contao\Controller::redirect($this->getReferer());
  	}
docs: Resend the double opt-in token
  
  @param Contao\DataContainer $dc