Creating Bindings in Code with Complex Path including Attached Property

[EldHasp]

For example, there is such a binding in AXAML:

    <Button Command="{Binding $self.(root:Helper.CommandVM).InsertFrameCommand}"/>

Helper.CommandVM is an Attached Property inherited from the parent.

Is it possible to create such a binding in Sharp code?
As far as I know, it was impossible to do this before. But maybe something has changed in recent years?

For comparison with WPF, a similar binding is created there like this:

    Binding bind = new Binding()
    {
        Path = new PropertyPath("(0).InsertFrameCommand", Helper.CommandVMProperty),
        RelativeSource = RelativeSource.Self
    };

It is not difficult to get a simple path to Attached Property. Example:

     // <Button x:Name="btn" Command="{Binding $self.(root:Helper.CommandVM)}"/>
     btn.Bind(Button.CommandProperty, btn.GetObservable(Helper.CommandVMProperty).ToBinding());

[maxkatz6]

You still can create instance of Binding/ReflectionBinding with a string path, making it similar to WPF. With the same problems as WPF - using reflection.
CompiledBinding is not user-friendly to be used outside of XAML, unfortunately. It is possible, but verbose.

[EldHasp]

Can you show an example of creating a Binding with a string path part of which is an Attached Property?
All my own attempts to create such a Binding have been unsuccessful.
In this task, using reflection does not create problems.

[EldHasp]

I found a solution using NuGet package System.Reactive.Linq:

// <Button Command="{Binding $self.(root:Helper.CommandVM).InsertFrameCommand}"/>
btn.Bind(Button.CommandProperty, btn.GetObservable(Helper.CommandVMProperty)
                                    .Select(vm => vm?.InsertFrameCommand)
                                    .ToBinding());