code: def trash(request, template_name='django_messages/trash.html'):
      
      message_list = Message.objects.trash_for(request.user)
      return render(request, template_name, {
          'message_list': message_list,
      })
docs: Displays a list of deleted messages.
      Optional arguments:
          ``template_name``: name of the template to use
      Hint: A Cron-Job could periodicly clean up old messages, which are deleted
      by sender and recipient.