class ActiveJob::QueueAdapters::BackburnerAdapter

def enqueue_at(job, timestamp) # :nodoc:
  delay = timestamp - Time.current.to_f
  response = Backburner::Worker.enqueue(JobWrapper, [job.serialize], queue: job.queue_name, pri: job.priority, delay: delay)
  job.provider_job_id = response[:id] if response.is_a?(Hash)
  response
end