code: public ListPublicKeysResult withPublicKeyList(PublicKey... publicKeyList) {
          if (this.publicKeyList == null) {
              setPublicKeyList(new com.amazonaws.internal.SdkInternalList<PublicKey>(publicKeyList.length));
          }
          for (PublicKey ele : publicKeyList) {
              this.publicKeyList.add(ele);
          }
          return this;
      }
docs: <p>
  Contains an array of PublicKey objects.
  </p>
  <note>
  <p>
  The returned public keys may have validity time ranges that overlap.
  </p>
  </note>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setPublicKeyList(java.util.Collection)} or {@link #withPublicKeyList(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param publicKeyList
  Contains an array of PublicKey objects.</p> <note>
  <p>
  The returned public keys may have validity time ranges that overlap.
  </p>
  @return Returns a reference to this object so that method calls can be chained together.