https://learn.microsoft.com/en-us/dotnet/api/microsoft.visualstudio.shell.provideautoloadattribute?view=visualstudiosdk-2017
ProvideAutoLoadAttribute Class (Microsoft.VisualStudio.Shell) | Microsoft Learn
This attribute registers the package as an extender. The GUID passed in determines what is being extended. The attributes on a package do not control the...
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