code: public ListInstanceFleetsResult withInstanceFleets(InstanceFleet... instanceFleets) {
          if (this.instanceFleets == null) {
              setInstanceFleets(new com.amazonaws.internal.SdkInternalList<InstanceFleet>(instanceFleets.length));
          }
          for (InstanceFleet ele : instanceFleets) {
              this.instanceFleets.add(ele);
          }
          return this;
      }
docs: <p>
  The list of instance fleets for the cluster and given filters.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setInstanceFleets(java.util.Collection)} or {@link #withInstanceFleets(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param instanceFleets
  The list of instance fleets for the cluster and given filters.
  @return Returns a reference to this object so that method calls can be chained together.