[View Complete Diff of Changes](https://github.com/dotnet/roslyn/compare/e117e182ece3f44ca524b99b2757363c76855326...f5dcba88147466b9f989f60bc873c9e083938bf1?w=1) - [Improve XML documentation clarity for IMethodSymbol.Arity property](https://github.com/dotnet/roslyn/pull/80693) - [Extensions: fix betterness with params and issues with `this` modifier](https://github.com/dotnet/roslyn/pull/80531) - [Add visualizer support for the StringBuilder class in VS](https://github.com/dotnet/roslyn/pull/80735) - [Update docs for building runtime with local Roslyn](https://github.com/dotnet/roslyn/pull/80725)
