return requireNonNull(elements);
  }

  @SuppressWarnings("unchecked")
  private E element(int i) {
    return (E) requireElements()[i];
  }

  private int entry(int i) {
    return requireEntries()[i];
  }

  private void setElement(int i, E value) {
    requireElements()[i] = value;
  }

  private void setEntry(int i, int value) {

    }

    /**
     * {@link Element}を文字列に変換します。
     *
     * @param element
     *            要素。{@literal null}であってはいけません
     * @return 変換された文字列
     */
    public static String toString(final Element element) {
        assertArgumentNotNull("element", element);

        final StringBuilder buf = new StringBuilder(1000);
        appendElement(element, buf);
        return new String(buf);
    }

  public E get(int index) {
    return delegate().get(index);
  }

  @Override
  public int indexOf(@CheckForNull Object element) {
    return delegate().indexOf(element);
  }

  @Override
  public int lastIndexOf(@CheckForNull Object element) {
    return delegate().lastIndexOf(element);
  }

  @Override
  public ListIterator<E> listIterator() {
    return delegate().listIterator();
  }

  @Override

    /**
     * Returns true if this set contains the specified element.
     *
     * @param o
     *            element whose presence in this set is to be tested.
     * @return true if this set contains the specified element.
     */
    @Override
    public boolean contains(final Object o) {
        return map.containsKey(o);
    }

    /**
     * Adds the specified element to this set if it is not already present.
     *

plicitMode=c.explicitMode,this.handleDocumentClick=function(a){var b=a.data.scope;b.$element.parent().find(a.target).length||b.$widget.is(a.target)||b.$widget.find(a.target).length||b.hideWidget()},this._init()};d.prototype={constructor:d,_init:function(){var b=this;this.showWidgetOnAddonClick&&this.$element.parent().hasClass("input-group")&&this.$element.parent().hasClass("bootstrap-timepicker")?(this.$element.parent(".input-group.bootstrap-timepicker").find(".input-group-addon").on({"click.tim...

  private SetImpl impl;

  // the following must be set during setUp
  private Set<Element> setToTest;

  @BeforeExperiment
  void setUp() {
    CollectionBenchmarkSampleData sampleData =
        new CollectionBenchmarkSampleData(true, random, 0.8, size);
    setToTest = (Set<Element>) impl.create(sampleData.getValuesInSet());
  }

  @Benchmark
  int iteration(int reps) {
    int x = 0;

  private SetImpl impl;

  // the following must be set during setUp
  private Set<Element> setToTest;

  @BeforeExperiment
  void setUp() {
    CollectionBenchmarkSampleData sampleData =
        new CollectionBenchmarkSampleData(true, random, 0.8, size);
    setToTest = (Set<Element>) impl.create(sampleData.getValuesInSet());
  }

  @Benchmark
  int iteration(int reps) {
    int x = 0;

  }

  protected void expectMissingKeys(K... elements) {
    for (K element : elements) {
      assertFalse("Should not contain key " + element, getMap().containsKey(element));
    }
  }

  protected void expectMissingValues(V... elements) {
    for (V element : elements) {
      assertFalse("Should not contain value " + element, getMap().containsValue(element));
    }
  }

	Days    int      `xml:"Days,omitempty"`
}

// Empty returns if a DelMarkerExpiration XML element is empty.
// Used to detect if lifecycle.Rule contained a DelMarkerExpiration element.
func (de DelMarkerExpiration) Empty() bool {
	return de.Days == 0
}

// UnmarshalXML decodes a single XML element into a DelMarkerExpiration value
func (de *DelMarkerExpiration) UnmarshalXML(dec *xml.Decoder, start xml.StartElement) error {

  // Query Operations

  /**
   * Returns the number of occurrences of {@code element} in this multiset.
   *
   * @param element the element to look for
   * @return the nonnegative number of occurrences of the element
   */
  @Override
  public int count(@CheckForNull Object element) {
    AtomicInteger existingCounter = safeGet(countMap, element);
    return (existingCounter == null) ? 0 : existingCounter.get();
  }