Possible null reference argument for parameter 'visual' in 'Visual? VisualExtensions.GetVisualParent(Visual visual)'.

Possible null reference argument for parameter 'item' in 'bool ICollection<Visual>.Remove(Visual item)'.

Possible null reference argument for parameter 'item' in 'bool ICollection<Visual>.Remove(Visual item)'.

'Markdown._loader' is obsolete

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)'.

Possible null reference return.

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

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