code: public CheckTicketsResponse checkTickets(List<String> tickets) throws JinxException {
      JinxUtils.validateParams(tickets);
      Map<String, String> params = new TreeMap<>();
      params.put("method", "flickr.photos.upload.checkTickets");
      params.put("tickets", JinxUtils.buildCommaDelimitedList(tickets));
      return jinx.flickrGet(params, CheckTicketsResponse.class, false);
    }
docs: Checks the status of one or more asynchronous photo upload tickets.
  <br>
  This method does not require authentication.
  
  @param tickets (Required) list of ticket id's.
  @return object with status of each ticket.
  @throws JinxException if required parameters are missing, or if there are any errors.
  @see <a href="https://www.flickr.com/services/api/flickr.photos.upload.checkTickets.html">flickr.photos.upload.checkTickets</a>