core-bundle/src/Resources/contao/dca/tl_opt_in.php
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());
	}
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());
	}
Resend the double opt-in token

@param Contao\DataContainer $dc