docs: public GetCurrentMetricDataRequest withGroupings(Grouping... groupings) {
          java.util.ArrayList<String> groupingsCopy = new java.util.ArrayList<String>(groupings.length);
          for (Grouping value : groupings) {
              groupingsCopy.add(value.toString());
          }
          if (getGroupings() == null) {
              setGroupings(groupingsCopy);
          } else {
              getGroupings().addAll(groupingsCopy);
          }
          return this;
      }