docs: public GetSamplingTargetsResult withUnprocessedStatistics(UnprocessedStatistics... unprocessedStatistics) {
          if (this.unprocessedStatistics == null) {
              setUnprocessedStatistics(new java.util.ArrayList<UnprocessedStatistics>(unprocessedStatistics.length));
          }
          for (UnprocessedStatistics ele : unprocessedStatistics) {
              this.unprocessedStatistics.add(ele);
          }
          return this;
      }