SplitButton Access Keys

public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
            //AccessKeyManager.Register("T", Button);
        }

        private void Button_Click(object sender, ActiproSoftware.Windows.Controls.Ribbon.Controls.ExecuteRoutedEventArgs e)
        {
            Console.WriteLine("Actipro Button Click");
        }

        private void StandardButton_Click(object sender, RoutedEventArgs e)
        {
            Console.WriteLine("Standard Button Click");
        }
    }

<Window x:Class="WpfApplication13.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300"
    xmlns:ribbon="http://schemas.actiprosoftware.com/winfx/xaml/ribbon">
    <StackPanel>
        <Label Content="Go to Bu_tton" Target="{Binding ElementName=Button}"/>
        <ribbon:SplitButton Name="Button" Click="Button_Click" Label="Font Color"/>
        <Label Content="Standar_d Button" Target="{Binding ElementName=StandardButton}"/>
        <Button Name="StandardButton" Click="StandardButton_Click" Content="Standard Button"/>
        <Label Content="Go to T_extBox" Target="{Binding ElementName=TextBox}"/>
        <TextBox Name="TextBox"/>
    </StackPanel>
</Window>