/// <summary>
        /// Occurs when a clone creation is first requested.
        /// </summary>
        /// <param name="sender">The sender of the event.</param>
        /// <param name="e">An <c>ItemRoutedEventArgs</c> that contains the event data.</param>
        private static void OnCloneCreatingEvent(object sender, DependencyObjectItemRoutedEventArgs e)
        {
            MainControl control = (MainControl)sender;

            // You can create your own clone of the source object here or instead let Ribbon create one for you that will be passed to CloneCreated
            control.eventsListBox.Items.Insert(0, String.Format("CloneCreating: {0}", e.OriginalSource));
        }
        /// <summary>
        /// Occurs when a clone is being disposed (tracking by CloneService is done).
        /// </summary>
        /// <param name="sender">The sender of the event.</param>
        /// <param name="e">An <c>ItemRoutedEventArgs</c> that contains the event data.</param>
        private static void OnCloneDisposedEvent(object sender, DependencyObjectItemRoutedEventArgs e)
        {
            MainControl control = (MainControl)sender;

            // Remove any event handlers for the cloned control here... the cloned control is in e.Item
            control.eventsListBox.Items.Insert(0, String.Format("CloneDisposed: {0}", e.OriginalSource));
        }
        /// <summary>
        /// Occurs right before a clone is about to be readied for use.
        /// </summary>
        /// <param name="sender">The sender of the event.</param>
        /// <param name="e">An <c>ItemRoutedEventArgs</c> that contains the event data.</param>
        private static void OnCloneCreatedEvent(object sender, DependencyObjectItemRoutedEventArgs e)
        {
            MainControl control = (MainControl)sender;

            // Modify the properties of the clones control or attach to any events here... the cloned control is in e.Item
            control.eventsListBox.Items.Insert(0, String.Format("CloneCreated: {0}", e.OriginalSource));
        }