https://learn.microsoft.com/en-us/dotnet/api/system.xaml.xamlxmlwriter.schemacontext?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
XamlXmlWriter.SchemaContext Property (System.Xaml) | Microsoft Learn
Gets the XAML schema context that this XamlXmlWriter uses for processing.
property systemxamlmicrosoftlearn