public virtual void testCompositeDbHistoryEventHandlerArgumentConstructorWithNullVarargs()
        {
            IHistoryEventHandler historyEventHandler = null;

            try
            {
                new CompositeDbHistoryEventHandler(historyEventHandler);
                Assert.Fail("NullValueException expected");
            }
            catch (NullValueException e)
            {
                AssertTextPresent("History event handler is null", e.Message);
            }
        }
 /// <summary>
 ///     Adds the <seealso cref="IHistoryEventHandler" /> to the list of
 ///     <seealso cref="IHistoryEventHandler" /> that consume the event.
 /// </summary>
 /// <param name="historyEventHandler">
 ///     the <seealso cref="IHistoryEventHandler" /> that consume the event.
 /// </param>
 public virtual void Add(IHistoryEventHandler historyEventHandler)
 {
     EnsureUtil.EnsureNotNull("History event handler", historyEventHandler);
     HistoryEventHandlers.Add(historyEventHandler);
 }