code: 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;
      }
docs: <p>
  An array of <a>IPSetSummary</a> objects.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setIPSets(java.util.Collection)} or {@link #withIPSets(java.util.Collection)} if you want to override the
  existing values.
  </p>
  
  @param iPSets
  An array of <a>IPSetSummary</a> objects.
  @return Returns a reference to this object so that method calls can be chained together.