Where are DesignerSession, IDesignToolsClient, and ObjectProxy defined in NET8 vs2022 and Microsoft.WinForms.Designer.SDK 1.6.0

[zkost]

Trying to port a custom control to net8.

Reading everything I can and using templates, samples and everything I can find on the net.

The types in the subject line are not defined anywhere. Can't compile my *.client project. What am I missing?

Specifically DesignDessions, IDesignToolsClient and ObjectProxy.

I have missed something.

Any direction and advise is greatly appreciated.

-Ben