I used the Amazon SDK and noticed this “warning”:
How is this possible? I did not install the plugin or extension, I just install the AWS SDK via Nuget. Is this a standard C # / Visual Studio feature?
Yes, this is a feature that nuget packages can use. They are sometimes called "code-supporting libraries." These are the nuget packages that come with the roslyn built-in analyzers. A discussion of how to write an analyzer is some extended topic. The magic is in the special nuget assembly:
Parsers are typically packaged and distributed as part of NuGet packages that implement the API or library in question.
Microsoft has published several examples and walkthroughs in various places:
