code: @Override
      public List<Metric> transform(QueryContext queryContext, List<Metric>... listOfList) {
          List<Metric> result = new ArrayList<>();
  
          for (List<Metric> list : listOfList) {
              for (Metric metric : list) {
                  result.add(metric);
              }
          }
          return result;
      }
docs: ~ Methods **************************************************************************************************************************************