code: private void addQueryParams(final Request request) {
          if (status != null) {
              request.addQueryParam("Status", status);
          }
  
          if (iccid != null) {
              request.addQueryParam("Iccid", iccid);
          }
  
          if (ratePlan != null) {
              request.addQueryParam("RatePlan", ratePlan);
          }
  
          if (eId != null) {
              request.addQueryParam("EId", eId);
          }
  
          if (simRegistrationCode != null) {
              request.addQueryParam("SimRegistrationCode", simRegistrationCode);
          }
  
          if (getPageSize() != null) {
              request.addQueryParam("PageSize", Integer.toString(getPageSize()));
          }
      }
docs: Add the requested query string arguments to the Request.
  
  @param request Request to add query string arguments to