如何在TreeView中混合数据绑定和静态级别？

<TreeView>
    <TreeViewItem Header="Static Node 1">
        <TreeViewItem Header="Static Node 1.1"/>
        <TreeViewItem Header="Static Node 1.2"/>
    </TreeViewItem>
    <TreeViewItem Header="Static Node 2"/>
    <TreeViewItem Header="Static Node 3"/>
    <TreeViewItem Header="Dynamic Node" ItemsSource="{Binding DynamicNodes}">
        <TreeViewItem.ItemTemplate>
            <HierarchicalDataTemplate>
                <TextBlock Text="{Binding Name}"/>
            </HierarchicalDataTemplate>
        </TreeViewItem.ItemTemplate>
    </TreeViewItem>
</TreeView>