Dereference of a possibly null reference.

Unreachable code detected

The symbol 'CodeAction.GetOperationsAsync(CancellationToken)' is banned in this project: Use overload that takes a solution (https://github.com/dotnet/roslyn-analyzers/blob/main/src/Microsoft.CodeAnalysis.BannedApiAnalyzers/BannedApiAnalyzers.Help.md)

The symbol 'CompletionService.GetCompletionsAsync(Document, int, CompletionTrigger, ImmutableHashSet<string>?, OptionSet?, CancellationToken)' is banned in this project: Use internal overload instead (https://github.com/dotnet/roslyn-analyzers/blob/main/src/Microsoft.CodeAnalysis.BannedApiAnalyzers/BannedApiAnalyzers.Help.md)

The symbol 'CompletionService.GetDescriptionAsync(Document, CompletionItem, CancellationToken)' is banned in this project: Use internal overload instead (https://github.com/dotnet/roslyn-analyzers/blob/main/src/Microsoft.CodeAnalysis.BannedApiAnalyzers/BannedApiAnalyzers.Help.md)

Synchronously waiting on tasks or awaiters may cause deadlocks. Use await or JoinableTaskFactory.Run instead. (https://microsoft.github.io/vs-threading/analyzers/VSTHRD002.html)

Non-nullable property 'Folders' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Files' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Possible null reference assignment.