code: public ListReusableDelegationSetsResult withDelegationSets(DelegationSet... delegationSets) {
          if (this.delegationSets == null) {
              setDelegationSets(new com.amazonaws.internal.SdkInternalList<DelegationSet>(delegationSets.length));
          }
          for (DelegationSet ele : delegationSets) {
              this.delegationSets.add(ele);
          }
          return this;
      }
docs: <p>
  A complex type that contains one <code>DelegationSet</code> element for each reusable delegation set that was
  created by the current AWS account.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setDelegationSets(java.util.Collection)} or {@link #withDelegationSets(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param delegationSets
  A complex type that contains one <code>DelegationSet</code> element for each reusable delegation set that
  was created by the current AWS account.
  @return Returns a reference to this object so that method calls can be chained together.