code: @Test(groups = {SAMPLES})
      public void getBillingStatisticsByAllDatacenters() {
          Statistics summarize = statisticsService
              .billingStats()
              .forDataCenters(
                  new DataCenterFilter()
                      .dataCenters(DE_FRANKFURT, US_EAST_STERLING)
              )
              .summarize();
  
          assertNotNull(summarize);
      }
docs: Step 1. App query total billing statistics by all datacenters