docs: public ListIPSetsResult withIPSets(IPSetSummary... iPSets) {
          if (this.iPSets == null) {
              setIPSets(new java.util.ArrayList<IPSetSummary>(iPSets.length));
          }
          for (IPSetSummary ele : iPSets) {
              this.iPSets.add(ele);
          }
          return this;
      }