private function getRecipients(License $license)
 {
     $recipients = [];
     if ($this->input->getOption('env') == 'prod') {
         $recipients[] = ['email' => $license->getTechContactEmail(), 'name' => $license->getTechContactName()];
         if ($license->getTechContactEmail() != $license->getBillingContactEmail()) {
             $recipients[] = ['email' => $license->getBillingContactEmail(), 'name' => $license->getBillingContactName()];
         }
     } else {
         $recipients[] = ['email' => $this->getContainer()->getParameter('vendor_email')];
     }
     return $recipients;
 }