docs: public ListWorkGroupsResult withWorkGroups(WorkGroupSummary... workGroups) {
          if (this.workGroups == null) {
              setWorkGroups(new java.util.ArrayList<WorkGroupSummary>(workGroups.length));
          }
          for (WorkGroupSummary ele : workGroups) {
              this.workGroups.add(ele);
          }
          return this;
      }