Background:
I try to use Menu component of avaloniaUI in axaml.
Problem:
The Items property of Menu cannot be set in axaml.I don’t know why this happened.
The axaml code is following:

<Menu Items="{Binding Items}" DockPanel.Dock="Top" Background="AliceBlue">
    <Menu.Styles>
        <Style Selector="MenuItem">
            <Setter Property="Header" Value="{Binding Header}"/>
        </Style>
    </Menu.Styles>
</Menu>

The main code in code-behind is following:

var menu = new MenuMainViewModel();
menu.MenuItems = new MenuItemViewModel[]

{
    new MenuItemViewModel
    {
        Header="file",
        Items=new MenuItemViewModel[]
        {
            new MenuItemViewModel { 
                Header="startNew", 
            },
        }
    },

};

The error message of Menu component in axaml is following:
Unable to find suitable setter or adder for property items of type Avalonia.Controls:Avalonia.Controls.itemControl for argument
Avalonia.Markup:Avalonia.Data.Binding, available setter parameter lists are:
Svstem.obieasvstem.0bect line 10, position 9.
Tring :
I find the avalonia’s official document for Menu component.The Menu component had Items property as following.

enter image description here

But I don’t know why it can’t be set.