Possible null reference return.

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.

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

Possible null reference assignment.

Possible null reference assignment.

Converting null literal or possible null value to non-nullable type.

Argument of type 'KeyValuePair<int, Control>' cannot be used for parameter 'item' of type 'KeyValuePair<int, Control?>' in 'void List<KeyValuePair<int, Control?>>.Add(KeyValuePair<int, Control?> item)' due to differences in the nullability of reference types.