Is it possible to call inherited functions?

[TheColorRed]

I am making a menu system that I want to open a PopupWindow. However, the PopupWindow is deeply inherited. Is there a way to call the function .show() from a deeply nested item like this?

export component FileMenu inherits MenuDropdown {}
export component MenuDropdown inherits PopupWindow {}

export component MenuBar {
    file-menu := FileMenu { }

    RootMenuItem {
        open => {
            file-menu.show();
        }
    }
}