Create a contextual ribbon rule programmatically

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Hi guys,

I read the following article from Kean Walmsley:

https://www.keanw.com/2011/10/displaying-an-autocad-ribbon-tab-contextually-using-net.html

He explains how to create rules for contextual tabs with xaml. I like to do the same programmatically. I found Autodesk.AutoCAD.Ribbon.TabSelectorRules and Autodesk.AutoCAD.Ribbon.Rule. But where and how do i register my rules?

Thanks in Advance,

Martin