code: private void addPostParams(final Request request) {
          if (track != null) {
              request.addPostParam("Track", track.toString());
          }
  
          if (publisher != null) {
              request.addPostParam("Publisher", publisher.toString());
          }
  
          if (kind != null) {
              request.addPostParam("Kind", kind.toString());
          }
  
          if (status != null) {
              request.addPostParam("Status", status.toString());
          }
      }
docs: Add the requested post parameters to the Request.
  
  @param request Request to add post params to