Possible null reference return.

Possible null reference argument for parameter 'value' in 'bool string.StartsWith(string value)'.

Possible null reference argument for parameter 'file' in 'LspIndentationStrategy.LspIndentationStrategy(TextEditorOptions options, LanguageService languageS, IFile file)'.

Possible null reference argument for parameter 'file' in 'LspFoldingStrategy.LspFoldingStrategy(LanguageService ls, IFile file)'.

Non-nullable property 'File' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Dereference of a possibly null reference.

Use "Async" suffix in names of methods that return an awaitable type. (https://github.com/Microsoft/vs-threading/blob/main/doc/analyzers/VSTHRD200.md)

Avoid "async void" methods, because any exceptions not handled by the method will crash the process. (https://github.com/Microsoft/vs-threading/blob/main/doc/analyzers/VSTHRD100.md)

Possible null reference argument for parameter 'file' in 'Task<IList<SearchResultModel>> SearchListViewModel.FindAllIndexesAsync(IFile file, string search, bool caseSensitive, bool regex, bool words, CancellationToken cancellationToken)'.