code: public function send(string $subject = null, string $text = null): void
      {
          if ($this->isConfirmed()) {
              throw new OptInTokenAlreadyConfirmedException();
          }
  
          if (!$this->isValid()) {
              throw new OptInTokenNoLongerValidException();
          }
  
          if (!$this->hasBeenSent()) {
              if (null === $subject || null === $text) {
                  throw new \LogicException('Please provide subject and text to send the token');
              }
  
              $this->model->emailSubject = $subject;
              $this->model->emailText = $text;
              $this->model->save();
          }
  
          /** @var Email $email */
          $email = $this->framework->createInstance(Email::class);
          $email->subject = $this->model->emailSubject;
          $email->text = $this->model->emailText;
          $email->sendTo($this->model->email);
      }
docs: {@inheritdoc}
  
  @throws \LogicException