/**
  * @param string $ticket
  * @param string $email
  * @return bool
  */
 public function validate($ticket, $email = null)
 {
     if (!$ticket) {
         throw new \InvalidArgumentException('Invalid ticket');
     }
     /** @var RegistrationApplication $registrationApplication */
     $registrationApplication = RegistrationApplication::unexpired($email, $ticket)->first();
     if ($registrationApplication) {
         $this->expireRegistrationApplication($registrationApplication);
         return true;
     }
     return false;
 }
 public function handle()
 {
     $deleted = RegistrationApplication::expired()->delete();
     dd($deleted);
 }