code: private function createEnvelope(JobInterface $job, array $options = [])
      {
          $scheduled = $this->parseOptionsToDateTime($options);
          $tried     = isset($options['tried']) ? (int) $options['tried'] : null;
          $message   = isset($options['message']) ? $options['message'] : null;
          $trace     = isset($options['trace']) ? $options['trace'] : null;
  
          $envelope = [
              'queue'     => $this->getName(),
              'status'    => self::STATUS_PENDING,
              'tried'     => $tried,
              'message'   => $message,
              'trace'     => $trace,
              'created'   => $this->dateTimeToUTCDateTime($this->now),
              'data'      => $this->serializeJob($job),
              'scheduled' => $this->dateTimeToUTCDateTime($scheduled),
              'priority'  => isset($options['priority']) ? $options['priority'] : self::DEFAULT_PRIORITY,
          ];
  
          return $envelope;
      }
docs: Create a mongo document.
  
  @param JobInterface $job
  @param array        $options
  
  @return array