Quick Access Toolbar controls and commands?

<ribbon:RibbonWindow 
    x:Class="RibbonExample.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:ribbon="clr-namespace:ActiproSoftware.Windows.Controls.Ribbon;assembly=ActiproSoftware.Ribbon.Wpf351" xmlns:Controls="clr-namespace:ActiproSoftware.Windows.Controls.Ribbon.Controls;assembly=ActiproSoftware.Ribbon.Wpf351" Title="MainWindow" Height="350" Width="525">
    <ribbon:Ribbon Name="myRibbon">
        <ribbon:Ribbon.ApplicationMenu>
            <Controls:ApplicationMenu>
                <Controls:Button Id="Button1" Label="{Binding Button1Text}" Click="Button_Click">
                </Controls:Button>
            </Controls:ApplicationMenu>
        </ribbon:Ribbon.ApplicationMenu>
        <ribbon:Ribbon.QuickAccessToolBarItems>
        </ribbon:Ribbon.QuickAccessToolBarItems>
    </ribbon:Ribbon>
</ribbon:RibbonWindow>

using System.ComponentModel;

namespace RibbonExample
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : INotifyPropertyChanged
    {
        public MainWindow()
        {
            InitializeComponent();
            Button1Text = "Button1";
            myRibbon.DataContext = this;
        }

        public string Button1Text { get; set; }

        private void Button_Click(object sender, ActiproSoftware.Windows.Controls.Ribbon.Controls.ExecuteRoutedEventArgs e)
        {
            Button1Text = Button1Text + "*";
            PropertyChanged(this, new PropertyChangedEventArgs("Button1Text"));
        }

        public event PropertyChangedEventHandler PropertyChanged;
    }
}

static MainWindow() {
    EventManager.RegisterClassHandler(typeof(MainWindow), CloneService.CloneCreatedEvent, new EventHandler<DependencyObjectItemRoutedEventArgs>(OnCloneCreated));
}

private static void OnCloneCreated(object source, DependencyObjectItemRoutedEventArgs e) {
    MainWindow window = (MainWindow)source;
    FrameworkElement element = e.OriginalSource as FrameworkElement;
    if (element != null) {
        switch (element.Name) {
            case "Button1": {
                RibbonControls.Button button = (RibbonControls.Button)e.Item;
                button.Click += window.Button_Click;
                break;
            }
        }
    }
}