Controller/Frontend/RegistrationController.php
public function confirmedAction()
    {
        $user = $this->getUser();
        if (!is_object($user) || !$user instanceof UserInterface) {
            throw $this->createAccessDeniedException('This user does not have access to this section.');
        }
        return $this->render("@MikyUser/Frontend/Registration/confirmed.html.twig", array(
            'user' => $user,
        ));
    }
public function confirmedAction()
    {
        $user = $this->getUser();
        if (!is_object($user) || !$user instanceof UserInterface) {
            throw $this->createAccessDeniedException('This user does not have access to this section.');
        }
        return $this->render("@MikyUser/Frontend/Registration/confirmed.html.twig", array(
            'user' => $user,
        ));
    }
Tell the user his account is now confirmed.

@return Response

@throws AccessDeniedException