[DEVEXPRESS/WPF] InsertMainMenuIfNotExistAction 엘리먼트 사용하기

<DataTemplate x:Key="DataTemplateKey1">
    <dxb:BarManagerActionContainer>
        <dxb:CreateStandardLayoutAction />
        <dxb:InsertMainMenuIfNotExistAction>
            <dxb:InsertMainMenuIfNotExistAction.Bar>
                <dxb:Bar x:Name="mainMenu"
                    UseWholeRow="True"
                    Caption="Main menu">
                    <dxb:Bar.DockInfo>
                        <dxb:BarDockInfo ContainerType="Top" />
                    </dxb:Bar.DockInfo>
                </dxb:Bar>
            </dxb:InsertMainMenuIfNotExistAction.Bar>
        </dxb:InsertMainMenuIfNotExistAction>
        <dxb:BarSubItem x:Name="fileBarSubItem"
            dxb:BarItemLinkActionBase.TargetType="mainMenu"
            dxb:BarItemLinkActionBase.ItemLinkIndex="0"
            Content="File" />
        <dxb:BarButtonItem x:Name="newBarButtonItem"
            dxb:BarItemLinkActionBase.Target="fileBarSubItem"
            dxb:BarItemLinkActionBase.ItemLinkIndex="0"
            Content="New" />
        <dxb:BarButtonItem x:Name="openBarButtonItem"
            dxb:BarItemLinkActionBase.Target="fileBarSubItem"
            dxb:BarItemLinkActionBase.ItemLinkIndex="1"
            Content="Open" />
        <dxb:BarButtonItem x:Name="saveBarButtonItem"
            dxb:BarItemLinkActionBase.Target="fileBarSubItem"
            dxb:BarItemLinkActionBase.ItemLinkIndex="2"
            Content="Save" />
        <dxb:BarButtonItem x:Name="exitBarButtonItem"
            dxb:BarItemLinkActionBase.Target="fileBarSubItem"
            dxb:BarItemLinkActionBase.ItemLinkIndex="3"
            Content="Exit" />
        <dxb:BarSubItem x:Name="helpBarSubItem"
            dxb:BarItemLinkActionBase.TargetType="mainMenu"
            Content="Help" />
        <dxb:BarButtonItem x:Name="aboutBarButtonItem"
            dxb:BarItemLinkActionBase.Target="helpBarSubItem"
            Content="About" />
    </dxb:BarManagerActionContainer>
</DataTemplate>

※ xmlns:dxb="http://schemas.devexpress.com/winfx/2008/xaml/bars"