Source generator should work on internal classes, too

[cytoph]

The source generator could easily find out the visibility of the class and use the same visibility for the generated partial class code. So why is it necessary for the class public?

[dnperfors]

The source generator specifically creates a public partial class, if the public is removed, the type would get the visibility of the one that actually specifies the visibility...
I wouldn't mind creating a PR for this.

[cytoph]

I didn't know that was possible (omitting the visibility so it uses the visibility of another part of the class where it is set). If so, that of course would be an option, too.