Adding new optional parameters (restrictedToMinimumLevel, levelSwitch) to the existing public Sentry() extension methods changes their metadata signatures. While source-compatible, this is binary-breaking in .NET: consumers compiled against a previous version of Sentry.Serilog will get a MissingMethodException at runtime until they recompile. For a public library this is an API contract change that warrants senior engineer review and, ideally, preservation of the prior signatures via additional overloads instead of in-place parameter additions.